Spontaneous phase transition from relaxor to macrodomain ferroelectric state in single-crystal PbSc0.5Nb0.5O3-BaSc0.5Nb0.5O3 solid solutions
Spontaneous phase transition from relaxor to macrodomain ferroelectric state in single-crystal PbSc0.5Nb0.5O3-BaSc0.5Nb0.5O3 solid solutions
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单晶 PbSc0.5Nb0.5O3-BaSc0.5Nb0.5O3 固溶体中从弛豫态到宏畴铁电态的自发相变
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发表时间：
2000
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影响因子：
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通讯作者：
M. A. Malitskaya
中科院分区：
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作者：
I. Raevskiĭ;V. V. Eremkin;V. Smotrakov;E. Gagarina;M. A. Malitskaya
Pb 1-xNbSc0.5Nb0.5O3固溶体（x≤0.04）的冷却导致从弛豫态到宏畴铁电态的自发跃迁，伴随着材料介电和光学性质的异常变化。随着系统中钡含量的增加，弛豫态变得更加稳定，并最终在x = 0.05时“冻结”。x=0.06的晶体表现出由强度为1.5 kV/cm的外部电场和介电老化过程中形成的内部电场诱导的宏畴铁电相的外观。
The cooling of Pb1−xBaxSc0.5Nb0.5O3 solid solutions with x≤0.04 leads to a spontaneous transition from a relaxor to a macrodomain ferroelectric state, accompanied by anomalous variation of the dielectric and optical properties of the material. As the barium content in the system increases, the relaxor state becomes more stable and eventually “freezes” at x≈0.05. The crystals with x=0.06 exhibited the appearance of a macrodomain ferroelectric phase induced both by an external electric field with a strength of 1.5 kV/cm and by an internal electric field formed in the course of dielectric aging.