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Structural, Electrical, and Magnetic Properties of Hexagonal Lu0.5−x Zr x Sc0.5FeO3 Ceramics
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2022-09-20 , DOI: 10.1002/pssb.202200400 Xi Xi Pan 1 , A. M. Zhang 1 , Jia Jia Zhu 1 , X. S. Wu 2
Physica Status Solidi (B) - Basic Solid State Physics ( IF 1.5 ) Pub Date : 2022-09-20 , DOI: 10.1002/pssb.202200400 Xi Xi Pan 1 , A. M. Zhang 1 , Jia Jia Zhu 1 , X. S. Wu 2
Affiliation
|
Hexagonal Lu0.5−x
Zr
x
Sc0.5FeO3 polycrystalline samples are synthesized by conventional solid-state reaction. Effects of slight Zr4+ ions substitution on the structural distortion and magnetoelectric properties are investigated. The coexistence of Fe2+ and Fe3+ is checked by X-ray photoelectron spectroscopy (XPS). X-ray diffraction (XRD) and Raman spectrum (RS) microstructural analysis reveal that all samples are in the hexagonal structure with the polar space group of P6
3
cm. With x increasing slightly, the tilting of FeO5 bipyramids and the bending of rare-earth atomic layers are suppressed. The Néel temperature T
N of antiferromagnetic (AFM) transition is decreased, whereas the weak ferromagnetic (WFM) order is strengthened. The permittivity ε
r of the samples is significantly increased. A dielectric anomaly near T
N in Lu0.45Zr0.05Sc0.5FeO3 may indicate magnetoelectric coupling. It is attributed to the spin–phonon coupling as is evidenced by the Raman phonon modes. The improvement of dielectricity and magnetoelectric coupling is explained by considering the Dzyaloshinskii–Moriya interaction, structural distortion, and the incremental ratio of Fe2+ ions. These results provide an idea for sensitive control of electric and magnetic properties in related materials.
中文翻译：
六方 Lu0.5−x Zr x Sc0.5FeO3 陶瓷的结构、电学和磁学特性
六方Lu 0.5− x Zr x Sc 0.5 FeO 3多晶样品通过常规固相反应合成。研究了轻微的 Zr 4+离子取代对结构变形和磁电性能的影响。Fe 2+和Fe 3+的共存通过X射线光电子能谱(XPS)检查。X射线衍射(XRD)和拉曼光谱(RS)显微结构分析表明，所有样品均为六方结构，极性空间群为P6 3 cm。随着x的轻微增加，FeO 5的倾斜 双锥和稀土原子层的弯曲受到抑制。反铁磁 (AFM) 跃迁的内尔温度T N降低，而弱铁磁 (WFM) 序增强。样品的介电常数ε r显着增加。Lu 0.45 Zr 0.05 Sc 0.5 FeO 3中T N附近的介电异常可能表示磁电耦合。正如拉曼声子模式所证明的那样，它归因于自旋声子耦合。通过考虑 Dzyaloshinskii-Moriya 相互作用、结构畸变和 Fe 2+离子的增量比来解释介电性和磁电耦合的改善。这些结果为敏感控制相关材料的电学和磁学性质提供了思路。
更新日期：2022-09-20
中文翻译：
六方 Lu0.5−x Zr x Sc0.5FeO3 陶瓷的结构、电学和磁学特性
六方Lu 0.5− x Zr x Sc 0.5 FeO 3多晶样品通过常规固相反应合成。研究了轻微的 Zr 4+离子取代对结构变形和磁电性能的影响。Fe 2+和Fe 3+的共存通过X射线光电子能谱(XPS)检查。X射线衍射(XRD)和拉曼光谱(RS)显微结构分析表明，所有样品均为六方结构，极性空间群为P6 3 cm。随着x的轻微增加，FeO 5的倾斜 双锥和稀土原子层的弯曲受到抑制。反铁磁 (AFM) 跃迁的内尔温度T N降低，而弱铁磁 (WFM) 序增强。样品的介电常数ε r显着增加。Lu 0.45 Zr 0.05 Sc 0.5 FeO 3中T N附近的介电异常可能表示磁电耦合。正如拉曼声子模式所证明的那样，它归因于自旋声子耦合。通过考虑 Dzyaloshinskii-Moriya 相互作用、结构畸变和 Fe 2+离子的增量比来解释介电性和磁电耦合的改善。这些结果为敏感控制相关材料的电学和磁学性质提供了思路。
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