<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE article PUBLIC "-//NLM//DTD JATS (Z39.96) Journal Publishing DTD v1.3 20210610//EN" "JATS-journalpublishing1-3.dtd">
<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">zldm</journal-id><journal-title-group><journal-title xml:lang="ru">Заводская лаборатория. Диагностика материалов</journal-title><trans-title-group xml:lang="en"><trans-title>Industrial laboratory. Diagnostics of materials</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">1028-6861</issn><issn pub-type="epub">2588-0187</issn><publisher><publisher-name>ООО «Издательство «ТЕСТ-ЗЛ»</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.26896/1028-6861-2023-89-10-34-39</article-id><article-id custom-type="elpub" pub-id-type="custom">zldm-2034</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ИССЛЕДОВАНИЕ СТРУКТУРЫ И СВОЙСТВ. ФИЗИЧЕСКИЕ МЕТОДЫ ИССЛЕДОВАНИЯ И КОНТРОЛЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>TESTING OF STRUCTURE AND PARAMETERS. PHYSICAL METHODS OF TESTING AND QUALITY CONTROL</subject></subj-group></article-categories><title-group><article-title>Определение оптимальной формы постоянных магнитов заданного объема, при которой сила их магнитного сцепления максимальна</article-title><trans-title-group xml:lang="en"><trans-title>Determination of the optimal shape of permanent magnets of a given volume providing maximum strength of their magnetic coupling</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поляков</surname><given-names>О. П.</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakov</surname><given-names>O. P.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Олег Петрович Поляков</p><p>Физический факультет МГУ</p><p>119991, Москва, Ленинские горы, д. 1, стр. 2; 117997, Москва, ул. Профсоюзная, д. 65</p></bio><bio xml:lang="en"><p>Oleg P. Polyakov</p><p>Faculty of Physics</p><p>1, str. 2, Leninskie gory, Moscow, 119991; 65, Profsoyuznaya ul., Moscow, 117997</p></bio><email xlink:type="simple">o_polyakov@physics.msu.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Поляков</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Polyakov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Петр Александрович Поляков </p><p>Физический факультет МГУ</p><p>119991, Москва, Ленинские горы, д. 1, стр. 2</p></bio><bio xml:lang="en"><p>Petr A. Polyakov</p><p>Faculty of Physics</p><p>1, str. 2, Leninskie gory, Moscow, 119991</p></bio><xref ref-type="aff" rid="aff-2"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>МГУ имени М. В. Ломоносова; &#13;
Институт проблем управления имени В. А. Трапезникова РАН</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M. V. Lomonosov Moscow State University;&#13;
V. A. Trapeznikov Institute of Control Sciences</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>МГУ имени М. В. Ломоносова</institution><country>Россия</country></aff><aff xml:lang="en"><institution>M. V. Lomonosov Moscow State University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2023</year></pub-date><pub-date pub-type="epub"><day>25</day><month>10</month><year>2023</year></pub-date><volume>89</volume><issue>10</issue><fpage>34</fpage><lpage>39</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Поляков О.П., Поляков П.А., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Поляков О.П., Поляков П.А.</copyright-holder><copyright-holder xml:lang="en">Polyakov O.P., Polyakov P.A.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://www.zldm.ru/jour/article/view/2034">https://www.zldm.ru/jour/article/view/2034</self-uri><abstract><p>Пондеромоторная сила сцепления двух постоянных магнитов зависит от их формы. В работе представлены результаты определения оптимальной формы эллипсоидальных магнитов, при которой сила их магнитного сцепления максимальна. Анализировалось взаимодействие двух половинок магнита, представляющего собой эллипсоид вращения, и магнит в виде длинного стержня с эллиптическим поперечным сечением. Получены аналитические формулы для сил сцепления в этих случаях. Для фиксированной массы или объема магнитов решена задача оптимизации силы сцепления и найдена геометрическая форма, при которой сила сцепления будет максимальной. Показано, что в случае магнита в виде эллипсоида вращения максимальная сила сцепления его половинок (в пренебрежении магнитным натяжением на боковые поверхности) достигается при эксцентриситете 0,625958. Величина максимальной силы сцепления превышает силу сцепления половинок однородно намагниченного шарового магнита такого же объема на 1,7 %. При этом площадь сцепления эллипсоидального магнита будет меньше площади сцепления шарового магнита на 28 %. Найдена оптимальная форма стержневого магнита эллиптического сечения с максимальной силой сцепления его половинок при фиксированном объеме магнита. Получена формула для пондеромоторной магнитостатической силы взаимодействия половинок стержневого магнита с эллиптическим сечением и максимальной силой взаимодействия. Численные оценки для спеченного стержневого магнита NdFeB показали, что пондеромоторная сила взаимодействия при радиусе поперечного сечения 5 см может достигать 2 т на 1 м длины. Полученные результаты могут быть использованы при повышении эффективности устройств на постоянных магнитах.</p></abstract><trans-abstract xml:lang="en"><p>The ponderomotive force of the adhesion of two permanent magnets depends on their shape. We present the results of determining the optimal shape of ellipsoidal magnets providing maximum magnetic adhesion between them. The interaction of two halves of a magnet, which is an ellipsoid of revolution, and a magnet in the form of a long rod with an elliptical cross section, is analyzed. Analytical formulas for the cohesion forces in these cases are obtained. For a fixed mass or volume of magnets, the problem of optimizing the adhesion force is solved and a geometric shape which provide the maximum adhesion force is determined. It is shown that in the case of a magnet in the form of an ellipsoid of revolution, the maximum adhesion force of its halves (ignoring the magnetic tension on the side surfaces) is achieved at an eccentricity of 0.625958. The magnitude of the maximum adhesion force exceeds the adhesion force of the halves of a uniformly magnetized spherical magnet of the same volume by 1.7%. In this case, the adhesion area of the ellipsoidal magnet will be less than the adhesion area of the spherical magnet by 28%. The optimal form of a bar magnet with an elliptical section with the maximum force of adhesion of its halves at a fixed volume of the magnet is determined. A formula is derived for the ponderomotive magnetostatic force of the interaction between the halves of a bar magnet with an elliptical section and the maximum force of interaction. Numerical estimates for a sintered NdFeB bar magnet showed that the ponderomotive force of interaction with a cross-sectional radius of 5 cm can reach 2 tons per 1 m of length. The results obtained can be used to improve the efficiency of devices based on permanent magnets.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>постоянные магниты</kwd><kwd>магнитостатика</kwd><kwd>пондеромоторные магнитные силы</kwd><kwd>магнитная левитация</kwd></kwd-group><kwd-group xml:lang="en"><kwd>permanent magnets</kwd><kwd>magnetostatics</kwd><kwd>ponderomotive magnetic forces</kwd><kwd>magnetic levitation</kwd></kwd-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Biao Xiang, Zhikai Liu, Hongzhang Feng, Tong Wen. Force analysis and measurement of permanent magnet biased AMB and PMB in hybrid magnetically suspended flywheel / Measurement. 2023. Vol. 206. N 112336. P. 1 – 13. DOI: 10.1016/j.measurement.2022.112336</mixed-citation><mixed-citation xml:lang="en">Biao Xiang, Zhikai Liu, Hongzhang Feng, Tong Wen. Force analysis and measurement of permanent magnet biased AMB and PMB in hybrid magnetically suspended flywheel / Measurement. 2023. Vol. 206. N 112336. P. 1 – 13. DOI: 10.1016/j.measurement.2022.112336</mixed-citation></citation-alternatives></ref><ref id="cit2"><label>2</label><citation-alternatives><mixed-citation xml:lang="ru">Suvorov V. A., Mohammad R. B., Sorokin P. A., et al. Mathematical model and experimental study of a magnet coupling with a stop / SN Applied Sciences. 2022. Vol. 4. Art. 286. DOI: 10.1007/s42452-022-05175-w</mixed-citation><mixed-citation xml:lang="en">Suvorov V. A., Mohammad R. B., Sorokin P. A., et al. Mathematical model and experimental study of a magnet coupling with a stop / SN Applied Sciences. 2022. Vol. 4. Art. 286. DOI: 10.1007/s42452-022-05175-w</mixed-citation></citation-alternatives></ref><ref id="cit3"><label>3</label><citation-alternatives><mixed-citation xml:lang="ru">Berezney J. P., Valentine M. T. A compact rotary magnetic tweezers device for dynamic material analysis / Rev. Sci. Instrum. 2022. Vol. 93. N 093701. DOI: 10.1063/5.0090199</mixed-citation><mixed-citation xml:lang="en">Berezney J. P., Valentine M. T. A compact rotary magnetic tweezers device for dynamic material analysis / Rev. Sci. Instrum. 2022. Vol. 93. N 093701. DOI: 10.1063/5.0090199</mixed-citation></citation-alternatives></ref><ref id="cit4"><label>4</label><citation-alternatives><mixed-citation xml:lang="ru">Yanxing Cheng, Jun Zheng, Huan Huang, Zigang Deng. A reconstructed three-dimensional HTS bulk electromagnetic model considering Jc spatial inhomogeneity and its implementation in a bulks’ combination system / Supercond. Sci. Tecnol. 2021. Vol. 34. N 125017. P. 1 – 15. DOI: 10.1088/1361-6668/ac336b</mixed-citation><mixed-citation xml:lang="en">Yanxing Cheng, Jun Zheng, Huan Huang, Zigang Deng. A reconstructed three-dimensional HTS bulk electromagnetic model considering Jc spatial inhomogeneity and its implementation in a bulks’ combination system / Supercond. Sci. Tecnol. 2021. Vol. 34. N 125017. P. 1 – 15. DOI: 10.1088/1361-6668/ac336b</mixed-citation></citation-alternatives></ref><ref id="cit5"><label>5</label><citation-alternatives><mixed-citation xml:lang="ru">Макаричев Ю. А., Иванников Ю. Н., Ратцев Я. А., Полянский Е. А. Комбинированный магнитный подвес / Вестник СГТУ. 2020. Т. 28. № 4. С. 142 – 154.</mixed-citation><mixed-citation xml:lang="en">Makarichev Yu. A., Ivannikov Yu. N., Rattsev Ya. A., Polyansky E. A. Combined magnetic suspension / Vestn. SGTU. 2020. Vol. 28. N 4. P. 142 – 154 [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit6"><label>6</label><citation-alternatives><mixed-citation xml:lang="ru">Воронков В. С., Малкин С. А. Экономичный простейший магнитный подвес / Журнал технической физики. 2011. Т. 81. Вып. 11. С. 135 – 139. DOI: 10.1134/S1063784211110284</mixed-citation><mixed-citation xml:lang="en">Voronkov V. S., Malkin S. A. Simple cost-efficient magnetic suspension / J. Tech. Phys. 2011. Vol. 56. P. 1675 – 1678. DOI: 10.1134/S1063784211110284</mixed-citation></citation-alternatives></ref><ref id="cit7"><label>7</label><citation-alternatives><mixed-citation xml:lang="ru">Park Y.-S. Comparative Performance Evaluation of Wound Rotor Synchronous Motor and Interior Permanent Magnet Synchronous Motor with Experimental Verification / Adv. Electr. Computer Eng. 2022. Vol. 22. N 2. P. 37 – 44. DOI: 10.4316/AECE.2022.02005</mixed-citation><mixed-citation xml:lang="en">Park Y.-S. Comparative Performance Evaluation of Wound Rotor Synchronous Motor and Interior Permanent Magnet Synchronous Motor with Experimental Verification / Adv. Electr. Computer Eng. 2022. Vol. 22. N 2. P. 37 – 44. DOI: 10.4316/AECE.2022.02005</mixed-citation></citation-alternatives></ref><ref id="cit8"><label>8</label><citation-alternatives><mixed-citation xml:lang="ru">Gandzha S. A., Sogrin A. I., Kiessh I. E. The Comparative Analysis of Permanent Magnet Electric Machines with Integer and Fractional Number of Slots per Pole and Phase / Procedia Eng. 2015. Vol. 129. P. 408 – 414. DOI: 10.1016/j.proeng.2015.12.137</mixed-citation><mixed-citation xml:lang="en">Gandzha S. A., Sogrin A. I., Kiessh I. E. The Comparative Analysis of Permanent Magnet Electric Machines with Integer and Fractional Number of Slots per Pole and Phase / Procedia Eng. 2015. Vol. 129. P. 408 – 414. DOI: 10.1016/j.proeng.2015.12.137</mixed-citation></citation-alternatives></ref><ref id="cit9"><label>9</label><citation-alternatives><mixed-citation xml:lang="ru">Naoya Soda, Naoki Hayashi, Masato Enokizono. Analytical Study on Core Loss Reduction of Segmented Stator Core Motor in Consideration of Rolling Direction of Nonoriented Electrical Steel Sheet / IEEE Trans. Industry Appl. 2021. Vol. 57. N 5. P. 4745 – 4753. DOI: 10.1109/TIA.2021.3091947</mixed-citation><mixed-citation xml:lang="en">Naoya Soda, Naoki Hayashi, Masato Enokizono. Analytical Study on Core Loss Reduction of Segmented Stator Core Motor in Consideration of Rolling Direction of Nonoriented Electrical Steel Sheet / IEEE Trans. Industry Appl. 2021. Vol. 57. N 5. P. 4745 – 4753. DOI: 10.1109/TIA.2021.3091947</mixed-citation></citation-alternatives></ref><ref id="cit10"><label>10</label><citation-alternatives><mixed-citation xml:lang="ru">Feng Y., Zheng J., Deng Z., et al. Double-layer quasi-Halbach guideway with NdFeB and ferrite materials for HTS Maglev / J. Alloys Compounds. 2022. Vol. 929. N 167342. P. 1 – 11. DOI: 10.1016/j.jallcom.2022.167342</mixed-citation><mixed-citation xml:lang="en">Feng Y., Zheng J., Deng Z., et al. Double-layer quasi-Halbach guideway with NdFeB and ferrite materials for HTS Maglev / J. Alloys Compounds. 2022. Vol. 929. N 167342. P. 1 – 11. DOI: 10.1016/j.jallcom.2022.167342</mixed-citation></citation-alternatives></ref><ref id="cit11"><label>11</label><citation-alternatives><mixed-citation xml:lang="ru">Kumar D., Sisodiya M., Mandal D., Bajpai V. Maglev micro-EDM: Feasibility and performance on Inconel 625 / CIRP J. Manufact. Sci. Technol. 2023. Vol. 40. P. 155 – 166. DOI: 10.1016/j.cirpj.2022.11.012</mixed-citation><mixed-citation xml:lang="en">Kumar D., Sisodiya M., Mandal D., Bajpai V. Maglev micro-EDM: Feasibility and performance on Inconel 625 / CIRP J. Manufact. Sci. Technol. 2023. Vol. 40. P. 155 – 166. DOI: 10.1016/j.cirpj.2022.11.012</mixed-citation></citation-alternatives></ref><ref id="cit12"><label>12</label><citation-alternatives><mixed-citation xml:lang="ru">Zheng J., Bao Y., Lei W., et al. Compound effect of adjacent HTS bulks’ anisotropy and inhomogeneity on maglev performances in an applied magnetic field / Mater. Today Comm. 2023. Vol. 34. N 105122. P. 1 – 7. DOI: 10.1016/j.mtcomm.2022.105122</mixed-citation><mixed-citation xml:lang="en">Zheng J., Bao Y., Lei W., et al. Compound effect of adjacent HTS bulks’ anisotropy and inhomogeneity on maglev performances in an applied magnetic field / Mater. Today Comm. 2023. Vol. 34. N 105122. P. 1 – 7. DOI: 10.1016/j.mtcomm.2022.105122</mixed-citation></citation-alternatives></ref><ref id="cit13"><label>13</label><citation-alternatives><mixed-citation xml:lang="ru">Xu Y., Zhao Z., Yin S., et al. Real-Time Performance Optimization of Electromagnetic Levitation Systems and the Experimental Validation. / IEEE Trans. Industry Electr. 2023. Vol. 70. N 3. P. 3035 – 3044. DOI: 10.1109/TIE.2022.3167154</mixed-citation><mixed-citation xml:lang="en">Xu Y., Zhao Z., Yin S., et al. Real-Time Performance Optimization of Electromagnetic Levitation Systems and the Experimental Validation. / IEEE Trans. Industry Electr. 2023. Vol. 70. N 3. P. 3035 – 3044. DOI: 10.1109/TIE.2022.3167154</mixed-citation></citation-alternatives></ref><ref id="cit14"><label>14</label><citation-alternatives><mixed-citation xml:lang="ru">Андреев Е. Н., Арсланова Д. Н., Ахметзянова Е. В. и др. Комбинированные электромагнитные подвесы с пониженным энергопотреблением для левитационного транспорта / Журнал технической физики. 2019. Т. 89. Вып. 7. С. 1123 – 1129. DOI: 10.21883/JTF.2019.07.47811.419-18</mixed-citation><mixed-citation xml:lang="en">Andreev E. N., Arslanova D. N., Akhmetzyanova E. V., et al. Combined Electromagnetic Suspensions with Reduced Energy Consumption for Levitation Vehicles / J. Tech. Phys. 2019. Vol. 64. P. 1060 – 1065. DOI: 10.1134/S1063784219070041</mixed-citation></citation-alternatives></ref><ref id="cit15"><label>15</label><citation-alternatives><mixed-citation xml:lang="ru">Андреева Н. В., Филимонов А. В., Рудской А. И. и др. Исследование наноструктурированных магнитотвердых материалов системы Nd – Ho – Fe – Co — B методами атомно-силовой и магнитно-силовой микроскопии / Физика твердого тела. 2016. Т. 58. Вып. 9. С. 1798 – 1805. DOI: 10.1134/S1063783416090079</mixed-citation><mixed-citation xml:lang="en">Andreeva N. V., Filimonov A. V., Rudskoy A. I., et al. A study of nanostructure magnetosolid Nd – Ho – Fe – Co – B materials via atomic force microscopy and magnetic force microscopy / Phys. Solid State. 2016. Vol. 58. P. 1862 – 1869. DOI: 10.1134/S1063783416090079</mixed-citation></citation-alternatives></ref><ref id="cit16"><label>16</label><citation-alternatives><mixed-citation xml:lang="ru">Костишин В. Г., Шакирзянов Р. И., Исаев И. М., Салогуб Д. В. Исследование радиопоглощающих характеристик полимерных композитов с ферритовыми наполнителями / Заводская лаборатория. Диагностика материалов. 2022. Т. 88. № 6. С. 31 – 45. DOI: 10.26896/1028-6861-2022-88-6-31-45</mixed-citation><mixed-citation xml:lang="en">Kostishin V. G., Shakirzyanov R. I., Isaev I. M., Salogub D. V. Study of radar absorbing characteristics of polymer composites with ferrite fillers / Zavod. Lab. Diagn. Mater. 2022. Vol. 88. N 6. P. 31 – 45 [in Russian]. DOI: 10.26896/1028-6861-2022-88-6-31-45</mixed-citation></citation-alternatives></ref><ref id="cit17"><label>17</label><citation-alternatives><mixed-citation xml:lang="ru">Костишин В. Г., Вергазов Р. М., Меньшова С. Б. и др. Влияние легирующих добавок на магнитную и диэлектрическую проницаемости ферритов-шпинелей / Заводская лаборатория. Диагностика материалов. 2021. Т. 87. № 1. С. 31 – 45. DOI: 10.26896/1028-6861-2021-87-1-30-34</mixed-citation><mixed-citation xml:lang="en">Kostishin V. G., Vergazov R. M., Menshova S. B., et al. The effect of alloying additives on the magnetic permeability and permittivity of ferrite spinel / Zavod. Lab. Diagn. Mater. 2021. Vol. 87. N 1. P. 30 – 34 [in Russian]. DOI: 10.26896/1028-6861-2021-87-1-30-34</mixed-citation></citation-alternatives></ref><ref id="cit18"><label>18</label><citation-alternatives><mixed-citation xml:lang="ru">Сандомирский С. Г. Исследование параметров частных петель магнитного гистерезиса сталей. / Заводская лаборатория. Диагностика материалов. 2019. Т. 85. № 1. С. 35 – 43. DOI: 10.26896/1028-6861-2019-85-1-I-35-44</mixed-citation><mixed-citation xml:lang="en">Sandomirsky S. G. Physical methods of research and monitoring / Zavod. Lab. Diagn. Mater. 2019. Vol. 85. N 1(I). P. 35 – 44 [in Russian]. DOI: 10.26896/1028-6861-2019-85-1-I-35-44</mixed-citation></citation-alternatives></ref><ref id="cit19"><label>19</label><citation-alternatives><mixed-citation xml:lang="ru">Поляков О. П., Поляков П. А. Постоянный магнит шаровой формы с неоднородным намагничиванием / Известия РАН. 2017. Т. 81. № 8. С. 1101 – 1103. DOI: 10.7868/S0367676517080166</mixed-citation><mixed-citation xml:lang="en">Polyakov O. P., Polyakov P. A. A permanent spherical magnet with inhomogeneous magnetization / Izv. RAN. 2017. Vol. 81. P. 993 – 995 [in Russian]. DOI: 10.3103/S1062873817080238</mixed-citation></citation-alternatives></ref><ref id="cit20"><label>20</label><citation-alternatives><mixed-citation xml:lang="ru">Wu C., Li G., Wang D., Xu J. An efficient analytical model and experiments of 3D electromagnetic force of permanent magnet electrodynamic suspension system / J. Appl. Phys. 2022. Vol. 132. N 175001. P. 1 – 10. DOI: 10.1063/5.0123786</mixed-citation><mixed-citation xml:lang="en">Wu C., Li G., Wang D., Xu J. An efficient analytical model and experiments of 3D electromagnetic force of permanent magnet electrodynamic suspension system / J. Appl. Phys. 2022. Vol. 132. N 175001. P. 1 – 10. DOI: 10.1063/5.0123786</mixed-citation></citation-alternatives></ref><ref id="cit21"><label>21</label><citation-alternatives><mixed-citation xml:lang="ru">Zhou D., Zhu L., Liu J., et al. Vertical Magnetic Field Distribution Characteristics of Triple-Peak Halbach Array PMG and Its Engineering Application in HTS Maglev Train / IEEE Trans. Appl. Superconduct. 2022. Vol. 32. N 9. P. 3602908. DOI: 10.1109/TASC.2022.3213995</mixed-citation><mixed-citation xml:lang="en">Zhou D., Zhu L., Liu J., et al. Vertical Magnetic Field Distribution Characteristics of Triple-Peak Halbach Array PMG and Its Engineering Application in HTS Maglev Train / IEEE Trans. Appl. Superconduct. 2022. Vol. 32. N 9. P. 3602908. DOI: 10.1109/TASC.2022.3213995</mixed-citation></citation-alternatives></ref><ref id="cit22"><label>22</label><citation-alternatives><mixed-citation xml:lang="ru">Пятаков М. А., Акимов М. Л., Поляков П. А. Взаимодействие неоднородного постоянного магнита, состоящего из решетки магнитожестких полосок, с массивной ферромагнитной средой / Известия РАН. Серия физическая. 2021. Т. 85. № 11. С. 1568 – 1572. DOI: 10.31857/s0367676521110314</mixed-citation><mixed-citation xml:lang="en">Pyatakov M. A., Akimov M. L., Polyakov P. A. Interaction between an Inhomogeneous Permanent Magnet Consisting of a Lattice of Hard Magnetic Strips and a Massive Ferromagnetic Medium / Izv. RAN. 2021. Vol. 85. P. 1230 – 1234 [in Russian]. DOI: 10.3103/S1062873821110319</mixed-citation></citation-alternatives></ref><ref id="cit23"><label>23</label><citation-alternatives><mixed-citation xml:lang="ru">Пятаков М. А., Поляков П. А., Русакова Н. Е. Изучение взаимодействия ферромагнетиков и расчет меры этого взаимодействия. / Известия РАН. Серия физическая. 2020. Т. 84. № 5. С. 719 – 722. DOI: 10.31857/S0367676520050282</mixed-citation><mixed-citation xml:lang="en">Pyatakov M. A., Polyakov P. A., Rusakova N. E. Study on Interaction between Ferromagnetics and Calculating the Degree of Interaction / Izv. RAN. 2020. Vol. 84. P. 593 – 595 [in Russian]. DOI: 10.3103/S106287382005024X</mixed-citation></citation-alternatives></ref><ref id="cit24"><label>24</label><citation-alternatives><mixed-citation xml:lang="ru">Ландау Л. Д., Лифшиц Е. М. Теоретическая физика. Т. 8. Электродинамика сплошных сред. — М.: Наука. 1982. — 620 с.</mixed-citation><mixed-citation xml:lang="en">Landau L. D., Lifshits E. M. Theoretical physics. — Moscow: Nauka, 1982. — 620 p. [in Russian].</mixed-citation></citation-alternatives></ref><ref id="cit25"><label>25</label><citation-alternatives><mixed-citation xml:lang="ru">Тамм И. Е. Основы теории электричества. — М.: Физматлит, 2003. — 616 с.</mixed-citation><mixed-citation xml:lang="en">Tamm I. E. Fundamentals of the Theory of Electricity. — Moscow: Mir, 1979. — 684 p. [in Russian].</mixed-citation></citation-alternatives></ref></ref-list><fn-group><fn fn-type="conflict"><p>The authors declare that there are no conflicts of interest present.</p></fn></fn-group></back></article>
