Multiferroic, Phonon and Optical Properties of Pure and Ion-Doped YFeO3 Nanoparticles

被引：19

作者：

Apostolov, Angel ^{[1
]}

Apostolova, Iliana ^{[2
]}

Wesselinowa, Julia ^{[3
]}

机构：

[1] Univ Architecture, Civil Engn & Geodesy, Hristo Smirnenski Blvd 1, Sofia 1046, Bulgaria

[2] Univ Forestry, Kl Ohridsky Blvd 10, Sofia 1756, Bulgaria

[3] Sofia Univ St Kliment Ohridski, J Bouchier Blvd 5, Sofia 1164, Bulgaria

来源：

NANOMATERIALS | 2021年 / 11卷 / 10期

关键词：

ion-doped YFeO3[!segment] [!segment]nanoparticles; magnetization; polarization; phonon energy; band gap; microscopic model; MAGNETIC-PROPERTIES; DIELECTRIC-PROPERTIES; NANOCRYSTALS;

D O I：

10.3390/nano11102731

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

The magnetic, electric, phonon and optical properties of pure and ion-doped orthorhombic YFeO3 nanoparticles are studied for the first time theoretically. The spontaneous magnetization Ms in YFeO3 decreases with decreasing particle size. Ms is also shape dependent. The magnetization increases by Co and Er ion doping and decreases by Ti doping, which is caused by the different strain which appears in the nanoparticles and changes the exchange interaction constants in the doped states. The phonon energy for the Ag mode omega = 149 cm(-1) and their damping decreases or increases with increasing temperature, respectively. Both show a kink near the Neel temperature, T-N, which disappears by applying an external magnetic field. The influence of different ion doping on the band gap energy is also discussed. The doping effects can be used for different applications.</p>

引用

页数：11

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