Тип публикации: статья из журнала
Год издания: 2012
Ключевые слова: transition metal ludwigites, Spin-glass freezing
Аннотация: The single crystal needle shape samples of diamagnetically diluted cobalt ludwigite CoMgGaO2BO3 have been grown by the flux method. The results of x-ray diffraction and both dc and ac magnetic measurements are presented. The unit cell volume undergoes a noticable growth under dilution from 328.31 A3 for the parent compound Co3O2BO3Показать полностьюto 345.46 A3 for CoMgGaO2BO3. The temperature of magnetic transition is considerably lower for the latter compound (25 K against 43 K for Co3O2BO3). The dc magnetization temperature dependencies undergo the splitting of field cooled and zero-field cooled regimes and the ac magnetic susceptibility temperature dependencies are frequency dependent pointing out a possible spin-glass freezing in the magnetic system.
Журнал: Физика низких температур
Выпуск журнала: Т. 38, № 2
Номера страниц: 214-217
ISSN журнала: 01326414
Место издания: Харьков
Издатель: Физико-технический институт низких температур им. Б.И. Веркина Национальной академии наук Украины