【摘 要】
：
Magnetic properties and magnetoresistance effects of the Er1-x GdxMn6 Ge6 and Ho1-x GdxMn6 Ge6 (0.2 ≤ x ≤0.9) compounds have been studied by magnetic property
【机 构】
：
Department of Applied Physics, University of Science and Technology of Wuhan, Wuhan 430081“,”State K
论文部分内容阅读
Magnetic properties and magnetoresistance effects of the Er1-x GdxMn6 Ge6 and Ho1-x GdxMn6 Ge6 (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 Er1-xGdxMn6Ge6 (x = 0.2 and 0.5) and Ho1-xGdxMn6Ge6 (x = 0.2 and 0.4) compounds order antiferromagnetically at 430, 432, 423 and 425 K, respectively. The Er1-x Gdx Mn6 Ge6 (x = 0.8 and 0.9) and Hoi-xGdxMn6Ge6 (x = 0.7, 0.8 and 0.9) compounds order ferrimagneticcally at 462, 471, 450, 463 and 4 70 K, respectively. The Er1-x Gdx Mn6 Ge6 and Ho1-x Gdx Mn6 Ge6 compounds undergo the second transitions below 71 and 82 K, respectively. The magnetoresistance curves of the Er0.1Gd0.9Mn6Ge6 and Ho0.1 Gd0.9Mn6Ge6compounds in a field of 5 T are presented and the magnetoresistance effects are related to the metamagnetic transitions.
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