Magnetic Properties and Magnetoresistance of HfFe6Ge6-Type Er1-xGdxMn6Ge6 and Ho1-xGdxMn6Ge6 (0.2 ≤ x ≤ 0.9) Compounds

Chin. Phys. Lett.

2003, Vol. 20

Issue (6): 915-918 DOI:

Original Articles

Magnetic Properties and Magnetoresistance of HfFe₆Ge₆-Type Er_1-xGd_xMn₆Ge₆ and Ho_1-xGd_xMn₆Ge₆ (0.2 ≤ x ≤ 0.9) Compounds

ZHANG Li-Gang¹;WANG Ru-Wu^1,2;LI-Lu¹;ZHANG Shao-Ying²;YAO Jin-Lei^2,3;SHEN Bao-Gen²

¹Department of Applied Physics, University of Science and Technology of Wuhan, Wuhan 430081 ²State Key Laboratory of Magnetism, Institute of Physics and Center for Condensed Matter Physics, Chinese Academy of Sciences, Beijing 100080 ³State Key Laboratory of Silicon Materials, Zhejiang University, Hangzhou 310027

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ZHANG Li-Gang, WANG Ru-Wu, LI-Lu et al 2003 Chin. Phys. Lett. 20 915-918

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Abstract Magnetic properties and magnetoresistance effects of the Er_1-xGd_xMn₆Ge₆ and Ho_1-xGd_xMn₆Ge₆ (0.2 ≤ x ≤ 0.9) compounds have been studied by magnetic property and resistivity measurements in applied magnetic field up to 5 T. For increasing Gd content, two series display a transition from the antiferromagnetic state to the ferrimagnetic state. The Er_1-xGd_xMn₆Ge₆(x = 0.2 and 0.5) and Ho_1-xGd_xMn₆Ge₆ (x = 0.2 and 0.4) compounds order antiferromagnetically at 430, 432, 423 and 425 K, respectively. The Er_1-xGd_xMn₆Ge₆ (x = 0.8 and 0.9) and Ho_1-xGd_xMn₆Ge₆ (x = 0.7, 0.8 and 0.9) compounds order ferrimagnetically at 462, 471, 450, 463 and 470 K, respectively. The Er_1-xGd_xMn₆Ge₆ and Ho_1-xGd_xMn₆Ge₆ compounds undergo the second transitions below 71 and 82 K, respectively. The magnetoresistance curves of the Er_0.1Gd_0.9Mn₆Ge₆ and Ho_0.1Gd_0.9Mn₆Ge₆ compounds in a field of 5 T are presented and the magnetoresistance effects are related to the metamagnetic transitions.

Keywords: 75.30.Kz 75.70.Pa 71.20.Lp

Published: 01 June 2003

PACS:	75.30.Kz	(Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.))
	75.70.Pa
	71.20.Lp	(Intermetallic compounds)

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https://cpl.iphy.ac.cn/ OR https://cpl.iphy.ac.cn/Y2003/V20/I6/0915

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	ZHANG Li-Gang
	WANG Ru-Wu
	LI-Lu
	ZHANG Shao-Ying
	YAO Jin-Lei
	SHEN Bao-Gen

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