Magnetic properties of NdMn1-xFexO3+δ system
Magnetic properties of NdMn1-xFexO3+δ system
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DOI：
10.1051/epjconf/20134015007
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发表时间：
2013
期刊：
影响因子：
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通讯作者：
M. Mihálik;J. Lazúrová;M. Fitta;M. Vávra
中科院分区：
文献类型：
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作者：
M. Mihálik;J. Lazúrová;M. Fitta;M. Vávra
对NdMn_（1-x）Fe_xO_（3 +δ）多晶化合物（x = 0.0，0.1和0.2）进行了磁化强度、交流磁化率和比热测量。Fe取代Mn使与Mn亚晶格磁有序化有关的Neel温度TN从85.5K降低到57.0K。当x = 0.2时，磁化强度随温度的变化在Tcomp = 26.7（5）K以下出现补偿温度和磁极反转。初始磁化曲线呈现出有序区域中的剩余磁化强度，剩余磁化强度的符号取决于温度。Fe取代Mn使NdMnO 3 +δ的磁滞回线由类铁磁回线（μ 0 Hc = 0. 09 T）变为“蝴蝶”型（μ 0 Hc = 0. 35 T），当x = 0. 1时，回线宽度增大（μ 0 Hc = 0. 55 T），当x = 0. 2时，回线中心部分收缩（μ0 Hc = 0. 35 T）。
Magnetization, AC susceptibility and specific heat measurements were performed on polycrystalline NdMn1-x Fex O3+δ compounds (x = 0.0, 0.1 and 0.2). Substitution of Fe for Mn reduces the Neel temperature TN , which is associated with magnetic ordering of Mn sublattice, from 85.5 K to 57.0 K. The temperature dependence of magnetization for x = 0.2 exhibits the compensation temperature and the pole inversion below Tcomp = 26.7(5) K. Initial magnetization curves present a remnant magnetization in the ordered region with the sign of remnant magnetization depending on temperature. The substitution of Fe for Mn changes hysteresis loop of NdMnO3+δ from the ferromagnetic-like one (μ0 Hc = 0.09 T) by expanding the width of the loop (μ0 Hc = 0.55 T) for x = 0.1 and then shrinking the central part of the loop to “butterfly” type (μ0 Hc = 0.35 T) for x = 0.2.