Influence of Ba/Sr ratio in compressively-strained (Ba,Sr)TiO3(001) films on the ferroelectric phase transition
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The in-plane compressed (001)-epitaxial (Ba,Sr)TiO3 [BST] films with different Ba/Sr ratio were fabricated on (001)cSrRuO3/(001)SrTiO3 and (001)cSrRuO3/(001)(La,Sr)(Al,Ta)O3 by RF magnetron sputtering. Regardless of the Ba/Sr ratio, the in-plane compressive strain shifts the ferroelectric phase transition to higher temperatures; however, the magnitude of its impact varies by the Ba/Sr ratio. With increasing the Ba/Sr ratio, the sensitivity to the strain becomes larger, which can be associated with the compositional dependence of Curie–Weiss constant, electrostrictive constant and elastic constant of BST.
- 公益社団法人 日本セラミックス協会の論文
公益社団法人 日本セラミックス協会 | 論文
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