Crystal structure and magnetic properties of R11Co4In9 (R=Tb, Dy, Ho and Er) compounds

被引：3
|
作者：
Baran, S. [1 ]
Tyvanchuk, Yu. [2 ]
Szytula, A. [1 ]
机构：
[1] Jagiellonian Univ, M Smoluchowski Inst Phys, Lojasiewicza 11, PL-30348 Krakow, Poland
[2] Ivan Franko Natl Univ Lviv, Dept Analyt Chem, Kyryla i Mefodiya 6, UA-79005 Lvov, Ukraine
来源：
INTERMETALLICS | 2021年 / 130卷 / 130期
关键词：
Intermetallics; Magnetically ordered compounds; Crystal structure; Magnetic measurements; GD; PR; TB; SM; PD; ND;
D O I：
10.1016/j.intermet.2020.107065
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
Crystal structure and magnetic properties of the R11Co4In9 compounds (R = Tb-Er) have been investigated by means of X-ray diffraction as well as dc magnetic measurements. The compounds crystallize in the orthorhombic Nd11Pd4In9-type crystal structure (Cmmm space group) in which the rare earth atoms occupy five nonequivalent sublattices. Magnetic properties of the investigated compounds are related mainly to the R3+ ions. The values of effective magnetic moments in the paramagnetic state are close to the free R3+ ion values while the moments in the ordered state at T = 2.0 K (R = Tb, Dy) or T = 1.9 K (R = Ho, Er) and H = 90 kOe are lower than the respective R3+ moments. The compounds show complex magnetic properties below 95 K (Tb), 88 K (Dy), 35 K (Ho) and 5.4 K (Er). With increase of temperature the antiferromagnetic ground state changes to the ferroor ferrimagnetic one. The critical temperatures of magnetic ordering do not fulfill the de Gennes scaling indicating a strong influence of the crystal electric field (CEF) in stabilizing the magnetic order.
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页数：7
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