Тип публикации: статья из журнала
Год издания: 2024
Идентификатор DOI: 10.1134/S0021364024603075
Аннотация: Single and polycrystalline samples of Mg2 –<i>x</i>Mn1 +<i>x</i>BO5 (<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 Mg2 –<i>x</i>Mn1 +<i>x</i>BO5 (<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.
Журнал: JETP Letters
Выпуск журнала: Т. 120, № 7
Номера страниц: 509-516
ISSN журнала: 00213640
Место издания: Moscow
Издатель: Pleiades Publishing, Ltd.