磁稀释作为一种直接检测和评价氧化体系中稀土元素交换相互作用的方法

IF 2.6 4区化学 Q2 CHEMISTRY, INORGANIC & NUCLEAR

Magnetochemistry Pub Date : 2023-05-20 DOI:10.3390/magnetochemistry9050137

N. Chezhina, A. Fedorova

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引用次数: 0

摘要

本文主要研究稀土原子在LaAlO3基体中的交换相互作用。利用磁稀释法，研究了稀释固溶体的磁化率和有效磁矩对浓度和温度的依赖性，描述了单个稀土原子的磁性特征和它们之间的超交换特征——低浓度时的反铁磁性，随着浓度的增加，钐在更大的簇内主要是铁磁性。超交换的发展类似于同一矩阵中d元素之间的交换。

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Magnetic Dilution as a Direct Method for Detecting and Evaluation of Exchange Interactions between Rare Earth Elements in Oxide Systems

This work is devoted to the study of exchange interactions between rare earth atoms in the LaAlO3 matrix. Using the magnetic dilution method, the study of concentration and temperature dependences of magnetic susceptibility and effective magnetic moments of diluted solid solutions the magnetic characteristics of single rare earth atoms and the character of superexchange between them are described—antiferromagnetic at low concentrations, and for samarium, predominantly ferromagnetic within greater clusters as the concentration increases. The development of superexchange is similar to the exchange between d-elements in the same matrix.

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来源期刊

Magnetochemistry Chemistry-Chemistry (miscellaneous)

CiteScore

3.90

自引率

11.10%

发文量

145

审稿时长

11 weeks

期刊介绍： Magnetochemistry (ISSN 2312-7481) is a unique international, scientific open access journal on molecular magnetism, the relationship between chemical structure and magnetism and magnetic materials. Magnetochemistry publishes research articles, short communications and reviews. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. Therefore, there is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.