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Self‐Consistent Four‐Particle Cluster Model of Fe3+ Heisenberg Chains: Spectral and Magnetic Properties of YFe3(BO3)4 Crystals
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2019-12-17 , DOI: 10.1002/pssr.201900603 Boris Z. Malkin 1 , Elena A. Popova 2 , Elena P. Chukalina 3, 4 , Artjoms Jablunovskis 4 , Marina N. Popova 3
Physica Status Solidi-Rapid Research Letters ( IF 2.5 ) Pub Date : 2019-12-17 , DOI: 10.1002/pssr.201900603 Boris Z. Malkin 1 , Elena A. Popova 2 , Elena P. Chukalina 3, 4 , Artjoms Jablunovskis 4 , Marina N. Popova 3
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The magnetic properties of antiferromagnetic quasi‐1D YFe3(BO3)4 crystals are studied based on the analysis of the measured optical spectra of the Fe3+ ions in different rare‐earth (RE) iron borates and a self‐consistent four‐particle cluster approach to helical iron chains. The parameters of crystal fields affecting the Fe3+ ions are calculated in the framework of the exchange charge model. The parameters of the isotropic intrachain and interchain exchange interactions between the Fe3+ ions are determined from modeling the temperature dependences of magnetic susceptibilities, the phase transition temperature, and spontaneous magnetic moments. The magnetic easy‐plane anisotropy is explained as the result of dipolar interactions between the Fe3+ ions in the trigonal crystal lattice. The developed model can be used to analyze and predict the properties of multiferroic multifunctional RE iron borates and highlight contributions of the iron subsystem into the magnetoelectric and magnetoelastic effects in these compounds.
中文翻译：
Fe3 + Heisenberg链的自洽四粒子簇模型：YFe3（BO3）4晶体的光谱和磁性
在对稀土（RE）硼铁矿和自洽四硼铁矿中Fe 3+离子的测量光谱进行分析的基础上，研究了反铁磁准1D YFe 3（BO 3）4晶体的磁性。螺旋铁链的粒子簇方法。在交换电荷模型的框架内计算影响Fe 3+离子的晶体场参数。Fe 3+之间各向同性链内和链间交换相互作用的参数离子是通过对磁化率，相变温度和自发磁矩的温度依赖性建模来确定的。磁性易平面各向异性是三角形晶格中Fe 3+离子之间的偶极相互作用的结果。开发的模型可用于分析和预测多铁性多功能稀土铁硼酸盐的性质，并突出显示铁子系统对这些化合物的磁电和磁弹性效应的贡献。
更新日期：2019-12-17
中文翻译：
Fe3 + Heisenberg链的自洽四粒子簇模型：YFe3（BO3）4晶体的光谱和磁性
在对稀土（RE）硼铁矿和自洽四硼铁矿中Fe 3+离子的测量光谱进行分析的基础上，研究了反铁磁准1D YFe 3（BO 3）4晶体的磁性。螺旋铁链的粒子簇方法。在交换电荷模型的框架内计算影响Fe 3+离子的晶体场参数。Fe 3+之间各向同性链内和链间交换相互作用的参数离子是通过对磁化率，相变温度和自发磁矩的温度依赖性建模来确定的。磁性易平面各向异性是三角形晶格中Fe 3+离子之间的偶极相互作用的结果。开发的模型可用于分析和预测多铁性多功能稀土铁硼酸盐的性质，并突出显示铁子系统对这些化合物的磁电和磁弹性效应的贡献。
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