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Structure, dielectric and magnetodielectric properties of Bi1-xGdxFeO3 Ceramics
Li Jing-Bo1; Rao Guang-Hui1; Xiao Yin-Guo2; Luo Jun1; Liu Guang-Yao1; Chen Jing-Ran1; Liang Jing-Kui1,3
Corresponding AuthorLi Jing-Bo(jbli@aphy.iphy.ac.cn)
2010-10-01
Source PublicationCHINESE PHYSICS B
ISSN1674-1056
Volume19Issue:10Pages:7
AbstractDifferent magnetodielectric effects were observed in Bi1-xGdxFeO3 ceramics depending on gadolinium content. A positive one was observed in the samples with x <= 0.10 at 295 K and 16 K, and a negative one in the sample with x = 0.4 at 16 K. Structure analysis by x-ray diffraction (XRD) reveals that the samples crystallize in the R3c structure (ferroelectrics) for x < 0.08 and in the Pbnm structure (paraelectrics) for x >= 0 : 3 at room temperature. Temperature-dependent dielectric response and x-ray diffraction confirm the occurrence of a structural transition in the Pbnm phase at low temperature for the samples with x <= 0.4. While the positive magnetodielectric effects can be attributed to a coupling of magnetic and crystallographic structures of the R 3 c phase, the observed negative magnetodielectric effect in the Pbnm phase can be associated with a low-temperature modification of the Pbnm structure. The observed dual-signed magnetodielectric effects suggest that the Bi1-xGdxFeO3 oxides are a good prototype for understanding the magnetodielectric coupling mechanism in this kind of materials.
Keywordmultiferroic magnetodielectric effect x-ray diffraction Bi1-xGdxFeO3 ceramics
Funding OrganizationNational Basic Research Program of China ; National Natural Science Foundation of China
DOI10.1088/1674-1056/19/10/107505
Indexed BySCI
Language英语
Funding ProjectNational Basic Research Program of China[2007CB925003] ; National Natural Science Foundation of China[50872148]
WOS Research AreaPhysics
WOS SubjectPhysics, Multidisciplinary
WOS IDWOS:000282923600087
PublisherIOP PUBLISHING LTD
Citation statistics
Cited Times:7[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/102228
Collection中国科学院金属研究所
Corresponding AuthorLi Jing-Bo
Affiliation1.Chinese Acad Sci, Beijing Natl Lab Condensed Matter Phys, Inst Phys, Beijing 100190, Peoples R China
2.Forschungszentrum Julich, Inst Festkoerperforsch, D-52425 Julich, Germany
3.Chinese Acad Sci, Int Ctr Mat Phys, Shenyang 110016, Peoples R China
Recommended Citation
GB/T 7714
Li Jing-Bo,Rao Guang-Hui,Xiao Yin-Guo,et al. Structure, dielectric and magnetodielectric properties of Bi1-xGdxFeO3 Ceramics[J]. CHINESE PHYSICS B,2010,19(10):7.
APA Li Jing-Bo.,Rao Guang-Hui.,Xiao Yin-Guo.,Luo Jun.,Liu Guang-Yao.,...&Liang Jing-Kui.(2010).Structure, dielectric and magnetodielectric properties of Bi1-xGdxFeO3 Ceramics.CHINESE PHYSICS B,19(10),7.
MLA Li Jing-Bo,et al."Structure, dielectric and magnetodielectric properties of Bi1-xGdxFeO3 Ceramics".CHINESE PHYSICS B 19.10(2010):7.
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