Magnetic properties of HoNi5-xAlx compounds

被引：4
|
作者：
Burzo, E [1 ]
Lazar, C [1 ]
Balasz, I [1 ]
Vlaic, P [1 ]
机构：
[1] Univ Babes Bolyai, Fac Phys, R-3400 Cluj Napoca, Romania
来源：
MOLECULAR CRYSTALS AND LIQUID CRYSTALS | 2004年 / 417卷
关键词：
band structures; holmium compounds; spin fluctuations;
D O I：
10.1080/15421400490478696
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
The HoNi5-xAlx compounds crystallize in a CaCu5 type structure for x < 2. For higher aluminium content, a HoNi2.6Ga2.4 type structure was shown. Band structure calculations show the presence of ordered nickel moments at 2c and 3g sites in HoNi5. The nickel moments decrease when increasing aluminium content and is nil for x >= 1.5. In paramagnetic range, the effective nickel moments decrease from 1.74 mu(B) ( x = 0) to 1.30 mu(B) ( x = 1) and 0.8 mu(B) ( x = 2). The magnetic behaviour of nickel is analyzed in models which take into account the electron correlation effects in d-band.
引用
收藏
页码：523 / 529
页数：7
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