Reducing the equivalent magnetic noise of Metglas/Mn-PMNT laminate composites via annealing treatment

被引：7

作者：

Chen, Rui ^{[1
,3
]}

Chen, Ziyun ^{[1
,4
]}

Hu, Fei ^{[1
]}

Jiao, Jie ^{[1
]}

Di, Wenning ^{[1
]}

Lu, Li ^{[1
]}

Luo, Haosu ^{[1
,2
]}

机构：

[1] Chinese Acad Sci, Shanghai Inst Ceram, Shanghai 201800, Peoples R China

[2] Univ Chinese Acad Sci, Ctr Mat Sci & Optoelect Engn, Beijing 100049, Peoples R China

[3] Univ Chinese Acad Sci, Beijing 100049, Peoples R China

[4] Shanghai Jiao Tong Univ, Dept Instrument Sci & Engn, Shanghai 200240, Peoples R China

来源：

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS | 2020年 / 512卷

基金：

中国国家自然科学基金;

关键词：

Mn-PMNT; Annealing treatment; Oxygen vacancies; Dielectric loss noise; ME laminate composites; DIELECTRIC-RELAXATION;

D O I：

10.1016/j.jmmm.2020.166976

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The variation of dielectric loss in [1 1 0] -oriented Mn-doped 0.71Pb(Mg1/3Nb2/3)O-3-0.29PbTiO(3) (Mn-PMNT) single crystals after different annealing treatments, as well as their influence on equivalent magnetic noise (EMN) for magnetoelectric laminate composites, were investigated in this study. Dielectric loss can be reduced significantly in oxygen-sufficient atmosphere and high annealing temperature, and dielectric constant varies little in this annealing process, which is favorable to the decrease of the dielectric loss noise. The temperature dependence of dc conductivity was used to characterize the change of dc conductivity and activation energy, which indicated that oxygen vacancies in Mn-PMNT single crystals can be reduced by the annealing treatment, leading to the decrease of dielectric loss. For the influence of magnetoelectric laminate composites, the EMN is clearly reduced in low frequency range (10 < f < 100 Hz) after annealing treatment, which is in good agreement with the simulation results.

引用

页数：5

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