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CONTROL OF TRANSITION FEATURES BY COMBINING ELECTRONIC-STRUCTURE MODIFICATION AND MAGNETOVOLUME EFFECT IN LA(FE,SI)13 BASED COMPOUNDS

机译:基于La(FE,SI)13的化合物的电子结构修饰和磁体积效应相结合的过渡特征控制

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摘要

To reduce a hysteresis of the first-order transition in La(Fe_(0.88)Si_(0.12))_(13), the correlation between the electronicrnstructure and energy barrier has been verified by ab-initio calculations. Consistent with the calculated results, a small hysteresisrnhas been confirmed in La(Fe_(0.88)Si_(0.10)Al_(0.02))_(13). However, a magnetization jump at the transition becomes broad. The sharpness ofrnthe transition can be restored by a partial substitution of Pr. La_(0.8)Pr_(0.2)(Fe_(0.88)Si_(0.10)Al_(0.02))_(13) exhibits a sharp transition with a smallrnhysteresis.
机译:为了减少La(Fe_(0.88)Si_(0.12))_(13)中一阶跃迁的磁滞,已经通过从头算计算验证了电子结构与能垒之间的相关性。与计算结果一致,在La(Fe_(0.88)Si_(0.10)Al_(0.02))_(13)中确认到较小的磁滞。但是,过渡处的磁化跃变变大。过渡的清晰度可以通过部分取代Pr来恢复。 La_(0.8)Pr_(0.2)(Fe_(0.88)Si_(0.10)Al_(0.02))_(13)表现出具有小滞后的急剧转变。

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  • 会议地点 Victoria(CA)
  • 作者

    A. FUJITA; D. MATSUNAMI; H. YAKO;

  • 作者单位

    Green-Innov. Magn. Mater. Res. Center, AIST Chubu 2266-98 Anagahora, Shimo-Shidami. Moriya-ku, Nagoya, Japan, asaya-fujita@aist.go.jp;

    Dept. Mater. Sci., Grad. Sch. of Engng., Tohoku Univ. Aoba-yama 02, Aoba-ku, Sendai, Japan;

    Ins. Mater. Res., Tohoku Univ. 2-1-1 Katahira, Aoba-ku, Sendai, Japan;

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