Crystal structure, electrical resistivity and Curie temperature of Ho(Mn1−xFex)2 and Ho(Co1−xNix)2 intermetallics
Crystal structure, electrical resistivity and Curie temperature of Ho(Mn1−xFex)2 and Ho(Co1−xNix)2 intermetallics
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DOI：
10.1016/j.jmmm.2013.01.018
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发表时间：
2013-05
影响因子：
2.7
通讯作者：
M. Bednarski;J. Chmist;J. Pszczoła
中科院分区：
文献类型：
--
作者：
M. Bednarski;J. Chmist;J. Pszczoła
Synthesis of Ho(Mn1−xFex)2and Ho(Co1−xNix)2intermetallic compounds, studies of their crystal structure and electrical resistivity were carried out. A pure cubic Fd3m, C15, MgCu2-type Laves phase was evidenced by X-ray measurements for all compounds. The unit cell parameter decreases nonlinearly with composition parameter x (or the average number n of 3d electrons per transition metal atom). Electrical resistivities for Ho(Mn1−xFex)2and Ho(Co1−xNix)2compounds were measured in a wide temperature range (13–1000K) and, for most of them, the component resistivities: residual, phonon and magnetic were separated. The parameters characterising the dependence of resistivity on temperature and composition, including the Debye temperature, were determined. The differential of the magnetic part of electrical resistivity against temperature was used to estimate Curie temperatures. The Curie temperature grows with an increasing amount of iron for Ho(Mn1−xFex)2compounds, and for Ho(Co1−xNix)2it reduces with an increasing amount of nickel. All results are summarized together with those for the Ho(Fe1−xCox)2series, which have been presented previously.
