High-frequency magnetoimpedance of double perovskite La1.2Sr1.8Mn2O7: Secondary transitions at high temperatures

Article

关键词: GIANT-MAGNETORESISTANCE;    COLOSSAL-MAGNETORESISTANCE;    MANGANESE OXIDES;    SINGLE-CRYSTALS;    DOUBLE-EXCHANGE;    LA1-XSRXMNO3;    FILMS;    RESISTIVITY;    MANGANITES;    ORDER;   

DOI  :  10.1103/PhysRevB.60.9268

来源: SCIE

【 摘 要 】

Radio frequency magnetoimpedance measurements reveal a pronounced anomaly at 260 K besides the main metal-insulator transition at 125 K in the double-perovskite material La1.2Sr1.8Mn2O7. This feature is not seen clearly in static resistivity and magnetization measurements. We suggest that this anomaly represents short-range magnetic correlations enhanced at radio frequencies, with the easy axis along the c axis. [S0163-1829(99)08437-4].

【 授权许可】

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