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Facile Synthesis, Magnetic and Electric Characterization of Mixed Valence La(0.75)K(0.25)AMnTiO(6) (A = Sr and Ba) Perovskites
Zhang, Ganghua1; Chen, Haijie1; Gu, Zheming; Zhang, Peizhi2; Zeng, Tao; Huang, Fuqiang1
2017
发表期刊INORGANIC CHEMISTRY
ISSN0020-1669
卷号56期号:17页码:10404
摘要A new series of mixed valence perovskites, La(0.75)K(0.25)AMnTiO(6) (A = Sr and Ba) nanocubes, have been synthesized by a mild hydrothermal route. From powder X-ray diffraction (XRD) analysis, the crystal structure of La(0.75)K(0.25)AMnTiO(6) was solved as the orthorhombic symmetry (space group Pbnm) with a random A-site or B-site arrangement. The phase purity of the products was confirmed by ICP, SEM, and EDS analyses, and the oxidation states of the B-site metal atoms were determined to be +4 for Ti and +3/+4 for Mn from XPS results. The soft ferromagnetic behavior is present in both samples. The Curie point T-C has been detected as high as 309 K in La0.75K0.25SrMnTiO6 and 217 K in La0.75K0.25BaMnTiO6. A Griffiths phase can be observed at the high temperature region, which is related to the magnetic inhomogeneity induced by the existence of short-range ferromagnetic clusters. The resistivity measurements indicate that the semiconducting properties of the samples can be depicted better by variable range hopping (VRH) due to a diluted double-exchange interaction of Mn3+-O-Mn4+ with Ti4+ doping.
DOI10.1021/acs.inorgchem.7b01337
WOS记录号WOS:000410005600035
EI入藏号1520-510X
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文献类型期刊论文
条目标识符http://ir.sic.ac.cn/handle/331005/26646
专题中国科学院上海硅酸盐研究所
作者单位1.Shanghai Res Inst Mat, Shanghai Key Lab Engn Mat Applicat & Evaluat, Shanghai 200437, Peoples R China
2.Chinese Acad Sci, Shanghai Inst Ceram, State Key Lab High Performance Ceram & Superfine, Shanghai 200050, Peoples R China
3.Minist Powder Mat, Shanghai Res Inst Mat, Shanghai 200437, Peoples R China
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Zhang, Ganghua,Chen, Haijie,Gu, Zheming,et al. Facile Synthesis, Magnetic and Electric Characterization of Mixed Valence La(0.75)K(0.25)AMnTiO(6) (A = Sr and Ba) Perovskites[J]. INORGANIC CHEMISTRY,2017,56(17):10404.
APA Zhang, Ganghua,Chen, Haijie,Gu, Zheming,Zhang, Peizhi,Zeng, Tao,&Huang, Fuqiang.(2017).Facile Synthesis, Magnetic and Electric Characterization of Mixed Valence La(0.75)K(0.25)AMnTiO(6) (A = Sr and Ba) Perovskites.INORGANIC CHEMISTRY,56(17),10404.
MLA Zhang, Ganghua,et al."Facile Synthesis, Magnetic and Electric Characterization of Mixed Valence La(0.75)K(0.25)AMnTiO(6) (A = Sr and Ba) Perovskites".INORGANIC CHEMISTRY 56.17(2017):10404.
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