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Sm26Co11Ga6-type R26{Co, Ni}6.5-9.4Ga10.5-7.6 compounds (R = Gd–Er): Crystal structure, magnetic ordering and heat capacityстатья
Дата последнего поиска статьи во внешних источниках: 8 апреля 2022 г.
- Авторы: Jinlei Yao, Garshev A.V., Yapaskurt V.O., Morozkin A.V.
- Журнал: Journal of Solid State Chemistry
- Том: 301
- Год издания: 2021
- Издательство: Elsevier B.V.
- Местоположение издательства: Netherlands
- Первая страница: 122322-1
- Последняя страница: 122322-15
- DOI: 10.1016/j.jssc.2021.122322
- Аннотация: The crystal structure of novel Sm26Co11Ga6-type {Gd - Er}26Ni6.5-8Ga10.5-9 compounds (space group P4/mbm, N 127, tP86) has been established using powder X-ray diffraction. The magnetic ordering and magnetocaloric effect of polycrystalline Er26Co9Ga8, Tb26Ni8Ga9 and Tb26Co9.4Ga7.6 have been investigated using magnetic and heat capacity measurements. Er26Co9Ga8 and Tb26Ni8Ga9 show mixed ferro-antiferromagnetic ordering and remarkable permanent magnet properties at low temperatures. Er26Co9Ga8 exhibits a large magnetocaloric effect with magnetic entropy change of -11.8 J/kg*K at 12 K and adiabatic temperature of 9.6 K for a field change of 50 kOe. The 'Gd26Ni8Ga9' alloy is composed of 88 wt.% of Gd26Ni8Ga9 and 12 wt.% of GdNi which are both soft ferromagnetic. Due to their close Curie temperatures, the composite of Gd26Ni8Ga9 and GdNi displays a table-like magnetocaloric effect with a wide temperature range from 68 K to 103 K.
- Добавил в систему: Морозкин Александр Владимирович