頁籤選單縮合
題 名 | From Tunnel-Type GMR to Intrinsic CMR in Granular Perovskite La₀.₈₃Sr₀.₁₇MnO |
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作 者 | Zhang,Ning; Zhang,Sheng; Ding,Weiping; Xing,Dingyu; Du,Youwei; | 書刊名 | Chinese Journal of Physics |
卷 期 | 36:2(Part1) 民87.04 |
頁 次 | 頁128-135 |
分類號 | 338.4 |
關鍵詞 | |
語 文 | 英文(English) |
英文摘要 | The transport properties of granular perovskite La₀.₈₃Sr₀.₁₇MnOz were investigated. Tunnel-type giant magnetoresistance (GMR) and intrinsic crystal colossal magnetoresistance (CMR) have been observed simultaneously. With grain growth, the GMR effect gradually disappears whereas the intrinsic CMR effect is enhanced. These phenomena suggest that the tunnel-type GMR is strongly grain-size dependent and related to the properties of the interfaces between the grains. |
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