N. A. Belskaya, N. V. Kazak, A. D. Vasiliev, E. V. Eremin, E. M. Moshkina, D. A. Velikanov, L. N. Bezmaternykh, S. Yu. Gavrilkin, S. G. Ovchinnikov
{"title":"混合价硼酸盐 Mg2 - xMn1 + xBO5 (x = 0.0, 0.2, 0.4) 中的结构多样性和相变","authors":"N. A. Belskaya, N. V. Kazak, A. D. Vasiliev, E. V. Eremin, E. M. Moshkina, D. A. Velikanov, L. N. Bezmaternykh, S. Yu. Gavrilkin, S. G. Ovchinnikov","doi":"10.1134/S0021364024603075","DOIUrl":null,"url":null,"abstract":"<p>Single and polycrystalline samples of Mg<sub>2 –</sub> <sub><i>x</i></sub>Mn<sub>1 +</sub> <sub><i>x</i></sub>BO<sub>5</sub> (<i>x</i> = 0.0, 0.2, 0.4) oxyborates have been obtained for the first time by spontaneous crystallization from the solution–melt and through a solid-state reaction. X-ray diffraction studies have shown that compounds are crystallized with increasing manganese content in the ludwigite (space group <i>Pbam</i>)–hulsite (space group <i>P</i>2/<i>m</i>)–orthopinakiolite (space group <i>Pbam</i>) series and belong to the “3 Å wallpaper” borate family. A common property of materials is the presence of octahedral complexes (walls) consisting of manganese ions with a mixed valence at even crystallographic sites. The dc magnetization and specific heat of the Mg<sub>2 –</sub> <sub><i>x</i></sub>Mn<sub>1 +</sub> <sub><i>x</i></sub>BO<sub>5</sub> (<i>x</i> = 0.0, 0.2, 0.4) compounds have been studied for the first time. These studies have shown that cooling is accompanied by magnetic transitions, which are due to the ordering of several magnetic subsystems.</p>","PeriodicalId":604,"journal":{"name":"JETP Letters","volume":"120 7","pages":"509 - 516"},"PeriodicalIF":1.4000,"publicationDate":"2024-11-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Structural Diversity and Phase Transitions in Mg2 – xMn1 + xBO5 (x = 0.0, 0.2, 0.4) Borates with a Mixed Valence\",\"authors\":\"N. A. Belskaya, N. V. Kazak, A. D. Vasiliev, E. V. Eremin, E. M. Moshkina, D. A. Velikanov, L. N. Bezmaternykh, S. Yu. Gavrilkin, S. G. Ovchinnikov\",\"doi\":\"10.1134/S0021364024603075\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>Single and polycrystalline samples of Mg<sub>2 –</sub> <sub><i>x</i></sub>Mn<sub>1 +</sub> <sub><i>x</i></sub>BO<sub>5</sub> (<i>x</i> = 0.0, 0.2, 0.4) oxyborates have been obtained for the first time by spontaneous crystallization from the solution–melt and through a solid-state reaction. X-ray diffraction studies have shown that compounds are crystallized with increasing manganese content in the ludwigite (space group <i>Pbam</i>)–hulsite (space group <i>P</i>2/<i>m</i>)–orthopinakiolite (space group <i>Pbam</i>) series and belong to the “3 Å wallpaper” borate family. A common property of materials is the presence of octahedral complexes (walls) consisting of manganese ions with a mixed valence at even crystallographic sites. The dc magnetization and specific heat of the Mg<sub>2 –</sub> <sub><i>x</i></sub>Mn<sub>1 +</sub> <sub><i>x</i></sub>BO<sub>5</sub> (<i>x</i> = 0.0, 0.2, 0.4) compounds have been studied for the first time. These studies have shown that cooling is accompanied by magnetic transitions, which are due to the ordering of several magnetic subsystems.</p>\",\"PeriodicalId\":604,\"journal\":{\"name\":\"JETP Letters\",\"volume\":\"120 7\",\"pages\":\"509 - 516\"},\"PeriodicalIF\":1.4000,\"publicationDate\":\"2024-11-12\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"JETP Letters\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://link.springer.com/article/10.1134/S0021364024603075\",\"RegionNum\":4,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q3\",\"JCRName\":\"PHYSICS, MULTIDISCIPLINARY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"JETP Letters","FirstCategoryId":"101","ListUrlMain":"https://link.springer.com/article/10.1134/S0021364024603075","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"PHYSICS, MULTIDISCIPLINARY","Score":null,"Total":0}
Structural Diversity and Phase Transitions in Mg2 – xMn1 + xBO5 (x = 0.0, 0.2, 0.4) Borates with a Mixed Valence
Single and polycrystalline samples of Mg2 –xMn1 +xBO5 (x = 0.0, 0.2, 0.4) oxyborates have been obtained for the first time by spontaneous crystallization from the solution–melt and through a solid-state reaction. X-ray diffraction studies have shown that compounds are crystallized with increasing manganese content in the ludwigite (space group Pbam)–hulsite (space group P2/m)–orthopinakiolite (space group Pbam) series and belong to the “3 Å wallpaper” borate family. A common property of materials is the presence of octahedral complexes (walls) consisting of manganese ions with a mixed valence at even crystallographic sites. The dc magnetization and specific heat of the Mg2 –xMn1 +xBO5 (x = 0.0, 0.2, 0.4) compounds have been studied for the first time. These studies have shown that cooling is accompanied by magnetic transitions, which are due to the ordering of several magnetic subsystems.
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