Electromagnon in the Y-type hexaferrite BaSrCoZnFe11AlO22

被引：27
|
作者：
Vit, Jakub [1 ,2 ,3 ,4 ]
Kadlec, Filip [1 ]
Kadlec, Christelle [1 ]
Borodavka, Fedir [1 ]
Chai, Yi Sheng [5 ,6 ]
Zhai, Kun [5 ]
Sun, Young [5 ]
Kamba, Stanislav [1 ]
机构：
[1] Czech Acad Sci, Inst Phys, Na Slovance 2, Prague 18221 8, Czech Republic
[2] Czech Tech Univ, Fac Nucl Sci & Phys Engn, Brehova 7, Prague 11519 1, Czech Republic
[3] Budapest Univ Technol & Econ, Dept Phys, H-1111 Budapest, Hungary
[4] MTA BME Lendulet Magnetoopt Spect Res Grp, H-1111 Budapest, Hungary
[5] Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China
[6] Chongqing Univ, Dept Appl Phys, Chongqing 401331, Peoples R China
来源：
PHYSICAL REVIEW B | 2018年 / 97卷 / 13期
基金：
中国国家自然科学基金;
关键词：
POLARIZATION; TEMPERATURE;
D O I：
10.1103/PhysRevB.97.134406
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We investigated static and dynamic magnetoelectric properties of single crystalline BaSrCoZnFe11AlO22, which is a room-temperature multiferroic with Y-type hexaferrite crystal structure. Below 300 K, a purely electric-dipole-active electromagnon at approximate to 1.2 THz with the electric polarization oscillating along the hexagonal axis was observed by THz and Raman spectroscopies. We investigated the behavior of the electromagnon with applied dc magnetic field and linked its properties to static measurements of the magnetic structure. Our analytical calculations determined selection rules for electromagnons activated by the magnetostriction mechanism in various magnetic structures of Y-type hexaferrite. Comparison with our experiment supports that the electromagnon is indeed activated by the magnetostriction mechanism involving spin vibrations along the hexagonal axis.
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页数：10
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