无序NdBaMnFeO与112型有序NdBaMnO钙钛矿的对比磁特性
Contrasting Magnetic Characteristics of Disordered NdBaMnFeO and 112-Type Ordered NdBaMnFeO Perovskites.
作者信息
Hossain Aslam, Gilev Artem R, Yanda Premakumar, Cherepanov Vladimir A, Sakthipandi Kathiresan, Sundaresan A, Mukhanova E A, Soldatov Alexander V, Atique Ullah A K M
机构信息
Smart Materials Research Institute, Southern Federal University, Sladkova 178/24, Rostov-on-Don 344090, Russia.
Department of Physical and Inorganic Chemistry, Institute of Natural Sciences and Mathematics, Ural Federal University, Yekaterinburg 620026, Russia.
出版信息
ACS Omega. 2024 Aug 15;9(34):36540-36545. doi: 10.1021/acsomega.4c04607. eCollection 2024 Aug 27.
The magnetic properties of disordered NdBaMnFeO and ordered NdBaMnFeO perovskites were investigated through temperature- and field-dependent DC-magnetization measurements. The temperature dependence of magnetic susceptibilities revealed that antiferromagnetic ordering occurs at temperatures below 185 K for the disordered NdBaMnFeO sample, whereas the ordered NdBaMnFeO perovskite exhibited a paramagnetic state throughout the entire temperature range examined. Notably, the disordered sample exhibited a glassy state, even at room temperature, which transformed into an antiferromagnetic state under higher applied magnetic fields. The magnetic ordering in the disordered NdBaMnFeO perovskite and the magnetic-disordering state in the structurally ordered NdBaMnFeO perovskite could be attributed to the alteration of the oxidation state of Mn.
通过温度和磁场依赖的直流磁化测量，研究了无序的钕钡锰铁氧体（NdBaMnFeO）和有序的钕钡锰铁氧体钙钛矿的磁性。磁化率的温度依赖性表明，对于无序的NdBaMnFeO样品，反铁磁有序在低于185K的温度下发生，而有序的NdBaMnFeO钙钛矿在整个测试温度范围内呈现顺磁状态。值得注意的是，无序样品即使在室温下也呈现玻璃态，在更高的外加磁场下转变为反铁磁态。无序的NdBaMnFeO钙钛矿中的磁有序和结构有序的NdBaMnFeO钙钛矿中的磁无序状态可归因于Mn氧化态的改变。
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