首页> 外文期刊>Solid State Communications >Study of the magnetization and transport properties of the La_((2-x)/3) Sr_((1-x)/3)Mn_(1-n)Cr_xO_3 (0≤ x≤ 0.2)system
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Study of the magnetization and transport properties of the La_((2-x)/3) Sr_((1-x)/3)Mn_(1-n)Cr_xO_3 (0≤ x≤ 0.2)system

机译:La _((2-x)/ 3)Sr _((1-x)/ 3)Mn_(1-n)Cr_xO_3(0≤x≤0.2)体系的磁化和输运性质的研究

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摘要

The samples with the Mn~(3+)/Mn~(4+) ratio fixed at 2:1 La_((2-x)/3) Sr_((1-x)/3)Mn_(1-x)Cr_xO_3 (0≤ x≤ 0.20) have been prepared. The magnetic, electrical transport, and magnetoresistance properties have been investigated. Remarkable transport and colossal magnetoresistance (CMR) effect, as well as cluster glass (CG) behaviors have been clearly observed in the samples studied. It was found that the Curie temperature T_c and insulator—metal transition temperature T_(pl) are strongly affected by Cr substitution. The experiment observations are discussed by taking into account the variety of tolerance factors t; the effects of A-site radius < r_A > and the A-site mismatch effect (σ~2).
机译:Mn〜(3 +)/ Mn〜(4+)比固定为2:1 La _((2-x)/ 3)Sr _((1-x)/ 3)Mn_(1-x)Cr_xO_3的样品(0≤x≤0.20)已经准备好。已经研究了磁,电传输和磁阻特性。在研究的样品中,明显观察到了显着的传输和巨大磁阻(CMR)效应以及簇玻璃(CG)行为。发现居里温度T_c和绝缘体-金属转变温度T_(pl)受Cr取代的强烈影响。通过考虑各种容忍因子t来讨论实验观察结果; A位半径的影响和A位失配效应(σ〜2)。

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