Cation ordering, ferrimagnetism and ferroelectric relaxor behavior in Pb(Fe1−xScx)2∕3W1∕3O3 solid solutions
نویسندگان
چکیده
منابع مشابه
Impurity-induced ferroelectric relaxor behavior in quantum paraelectric SrTiO3 and ferroelectric BaTiO3
The ‘‘ferroelectric relaxor’’ behavior, which shows a rounded permittivity peak with low-frequency dispersion, was first observed by Smolenskii et al. in the Ba(Ti,Sn)O3 solid solution in 1954. Later, this phenomenon was also observed in Pb(Mg1/3Nb2/3)O3 ~PMN! compounds by the same group. Smolenskii et al. named this phenomenon as a behavior of the ferroelectric with diffuse phase transition ~D...
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We report on the synthesis of a new relaxor compound with chemical formula Pb0.78Ba0.22Sc0.5Ta0.5O3 (PBST). Single crystals were obtained by the high-temperature solution growth method. The structure of the new compound is of double-perovskite type with face-centred cubic symmetry at room temperature. The frequency dependence of the dielectric constant of PBST shows a strong dielectric dispersi...
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In this article, we report the evolution of the dielectric behavior from a dielectric relaxor to a ferroelectric relaxor with variation of Bi concentration in (Sr121.5xBix)TiO3 (0<x<0.2). In the doping range 0.0005<x<0.002, two dielectric modes A and B are induced. The temperature (Tm) where the permittivity maximum occurs for modes A and B is independent of Bi concentration and of dc electric ...
متن کاملFerroelectric Dynamics in the Perovskite Relaxor PMN
We review results obtained from recent neutron scattering studies of the lead-oxide class of perovskite relaxors PMN and PZN. A ferroelectric soft mode has been identified in PMN at 1100 K that becomes overdamped near 620 K. This is the same temperature at which polar nanoregions (PNR) begin to form, denoted by Td , and suggests that a direct connection exists between the soft mode and the PNR....
متن کاملBi:SrTiO3: A quantum ferroelectric and a relaxor
Quantum ferroelectric and ferroelectric relaxor behavior has been found in (Sr121.5xBix)TiO3. For x <0.0267, the quantum ferroelectric relationship T«m}(x2xc) 1/2 holds with xc'0.0005, and obvious hysteresis loops were observed. The polarization relaxation shows critical slowing down. At high Bi concentration, a crossover from quantum ferroelectric to relaxor behavior occurred. The coexistence ...
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ژورنال
عنوان ژورنال: The European Physical Journal B
سال: 2019
ISSN: 1434-6028,1434-6036
DOI: 10.1140/epjb/e2019-100149-9