名义成分为La1.0Ca2.0Mn2O7锰氧化物的压阻效应

朱嘉林 刘振兴 禹日成 李凤英 靳常青

朱嘉林, 刘振兴, 禹日成, 李凤英, 靳常青. 名义成分为La1.0Ca2.0Mn2O7锰氧化物的压阻效应[J]. 高压物理学报, 2006, 20(3): 230-236 . doi: 10.11858/gywlxb.2006.03.002
引用本文: 朱嘉林, 刘振兴, 禹日成, 李凤英, 靳常青. 名义成分为La1.0Ca2.0Mn2O7锰氧化物的压阻效应[J]. 高压物理学报, 2006, 20(3): 230-236 . doi: 10.11858/gywlxb.2006.03.002
ZHU Jia-Lin, LIU Zhen-Xing, YU Ri-Cheng, LI Feng-Ying, JIN Chang-Qing. Pressure Effect on Electrical Properties of a Manganate with Nominal Composition La1.0Ca2.0Mn2O7[J]. Chinese Journal of High Pressure Physics, 2006, 20(3): 230-236 . doi: 10.11858/gywlxb.2006.03.002
Citation: ZHU Jia-Lin, LIU Zhen-Xing, YU Ri-Cheng, LI Feng-Ying, JIN Chang-Qing. Pressure Effect on Electrical Properties of a Manganate with Nominal Composition La1.0Ca2.0Mn2O7[J]. Chinese Journal of High Pressure Physics, 2006, 20(3): 230-236 . doi: 10.11858/gywlxb.2006.03.002

名义成分为La1.0Ca2.0Mn2O7锰氧化物的压阻效应

doi: 10.11858/gywlxb.2006.03.002
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    通讯作者:

    朱嘉林

Pressure Effect on Electrical Properties of a Manganate with Nominal Composition La1.0Ca2.0Mn2O7

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    Corresponding author: ZHU Jia-Lin
  • 摘要: 利用低温高压电阻原位测量装置(自箝铍青铜活塞-圆筒式压砧),在0~1.05 GPa静水压力范围内,对以层状钙钛矿结构为主相、名义成分为La1.0Ca2.0Mn2O7的锰氧化物样品进行了压阻效应研究。实验观测到异常的压阻效应。在低温5~150 K范围内,压力为0.55 GPa时,样品呈现出高达40%的压阻效应,而且,金属-绝缘体相变温度在低压范围内随压力的增加而增加,但随着压力的进一步增加而减小。

     

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出版历程
  • 收稿日期:  2005-07-06
  • 修回日期:  2005-12-01
  • 发布日期:  2006-09-05

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