Temperature evolution of the magnetic properties of lanthanum-strontium manganites

IF 0.2 Q4 PHYSICS, MULTIDISCIPLINARY

St Petersburg Polytechnic University Journal-Physics and Mathematics Pub Date : 2016-10-01 DOI:10.1016/j.spjpm.2016.08.001

Polina Yu. Vanina , Aleksandr A. Naberezhnov , Viktor I. Nizhankovskii , Rinat F. Mamin

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引用次数: 3

Abstract

The temperature dependences of the magnetization M(T) for multiferroic single crystal lanthanum-strontium manganites La_0.875Sr_0.125MnO₃ (LSMO-0.125) and La_0.93Sr_0.07MnO₃ (LSMO-0.07) have been obtained. It is shown that the phase transitions (PT) in LSMO-0.07 at T_C = 125.8(1,5) K and in LSMO-0.125 at T_C1 = 181.2 (1.5) belong to the second order type. The phase transition in LSMO-0.125 at T_C2 = 157.6 (1.5) K is the first order PT. From the M^–1(T) curves, the values of the magnetic moments have been determined. They are equal to μ₁ = 2.47(1) μ_B/Mn and μ₂ = 2.82(1) μ_B/Mn, for LSMO-0.125 and LSMO-0.07 respectively.

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镧锶锰矿石磁性能的温度演化

得到了多铁单晶镧锶锰酸盐La0.875Sr0.125MnO3 (lsmoo -0.125)和La0.93Sr0.07MnO3 (lsmoo -0.07)磁化强度M(T)的温度依赖性。结果表明，LSMO-0.07在TC = 125.8(1,5) K时的相变(PT)和LSMO-0.125在TC = 181.2 (1.5) K时的相变(PT)属于二级相变。LSMO-0.125在TC2 = 157.6 (1.5) K时的相变为一阶PT。根据M-1 (T)曲线，确定了磁矩的值。LSMO-0.125和LSMO-0.07分别为μ1 = 2.47 μB/Mn和μ2 = 2.82(1) μB/Mn。

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来源期刊

St Petersburg Polytechnic University Journal-Physics and Mathematics PHYSICS, MULTIDISCIPLINARY-

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50.00%

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