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首页> 外文期刊>Solid State Communications >The current-induced effect on the Jahn-Teller distortion in the La0.5Ca0.5MnO3 manganite
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The current-induced effect on the Jahn-Teller distortion in the La0.5Ca0.5MnO3 manganite

机译：电流对La0.5Ca0.5MnO3锰矿中Jahn-Teller变形的影响

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摘要

The influence of dc current on the resistivity p and the Young's modulus E of La0.5Ca0.5MnO3 compound has been investigated by means of an in situ measuring method. At low temperatures, both the resistivity p and the relative modulus A-E increase with the current. A relaxation behavior of p to the higher resistive state is observed a(a fixed temperature and a constant current. After storing the sample for a few days, p decreases with the current. accompanying a slight drop of DeltaE at low temperatures. Current-induced effects on p and DeltaE are interpreted according to the current-induced interwinning of Mn3+O6 octahedral distortion modes between Q(2)- and Q(3)-types. which is suggested to contribute to the variation of the resiStivity. (C) 2004 Elsevier Ltd. All rights reserved.
机译：通过现场测量方法研究了直流电流对La0.5Ca0.5MnO3化合物的电阻率p和杨氏模量E的影响。在低温下，电阻率p和相对模量A-E均随电流增加。观察到p在较高的电阻状态下的弛豫行为a（固定温度和恒定电流。将样品存储几天后，p随着电流而减小。在低温下伴随DeltaE的轻微下降。根据电流引起的Q（2）-和Q（3）-型之间的Mn3 + O6八面体畸变模式的相互影响来解释对p和DeltaE的影响。这有助于电阻率的变化。（C） 2004 Elsevier Ltd.保留所有权利。

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