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Effect of doping on the structural, magnetic, and ferroelectric properties of Ni(1-x)A(x)TiO(3) (A = Mn, Fe, Co, Cu, Zn;x=0, 0.05, and 0.1)

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成果类型:
期刊论文
作者:
Tursun, R.;Su, Y. C.*;Yu, Q. S.;Tan, J.;Hu, T.;Luo, Z. B.;Zhang, J.
通讯作者:
Su, Y. C.
作者机构:
[Su, Y. C.; Yu, Q. S.; Luo, Z. B.; Tursun, R.; Hu, T.; Tan, J.; Zhang, J.] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China.
通讯机构:
[Su, Y. C.] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China.
语种:
英文
关键词:
Magnetic properties;Ferroelectric properties;NiTiO3;Formula;Characterization
期刊:
JOURNAL OF ALLOYS AND COMPOUNDS
ISSN:
0925-8388
年:
2019
卷:
773
页码:
288-298
文献类别:
WOS:Article
所属学科:
WOS学科类别:Chemistry, Physical;Materials Science, Multidisciplinary;Metallurgy & Metallurgical Engineering
入藏号:
机构署名:
本校为第一且通讯机构
院系归属:
材料科学与工程学院
摘要:
In order to create a new NiTiO3-based system of ferromagnetic material at room temperature, powdered ABO(3) ilmenite structure titanates with the composition Ni(1-x)A(x)TiO(3), where A = Mn, Fe, Co, Cu, and Zn, and x = 0, 0.05, and 0.1, were synthesized using the sol-gel method. X-ray diffraction spectroscopy (XRD), X-ray photoelectron spectroscopy (XPS), field-emission scanning electron microscopy (FE-SEM), Raman spectroscopy (RAMAN), Fourier-transform infrared spectroscopy (FT-IR), vibrating-sample magnetometer (VSM), and TF-2000 analysis methods were employed to systematically investigate the crystal sizes, morphologies, structural, magnetic, and ferroelectric properties of the samples. Fe- (x = 0.1), Cu- (x = 0.05), and Zn- (x = 0.05) doped NiTiO3 samples displayed ferromagnetic properties at room temperature. The polarization-electric field curves confirmed the ferroelectric properties of these samples, which were present at room temperature. These ferroelectric properties were lower than in the undoped NiTiO3 samples, and the ferromagnetic properties in the samples had different origins. The ferromagnetism in Fe- (x = 0.1) doped sample was attributed to spin splitting of transition metal and oxygen vacancies, while, oxygen octahedra distortion caused by Ni site substitution was responsible for the ferromagnetism in Cu- (x = 0.05), Zn- (x = 0.05) doped samples. This is because the ferromagnetic phase with non-uniform domain structure, when mixed into the ferroelectric phase in the presence of applied electric field acts as pores, and breaks the electric circuit, resulting in a decrease in ferroelectric parameters. (C) 2018 Published by Elsevier B.V.
参考文献:
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