Reversible tuning of a series of intergrowth phases of the Ruddlesden–Popper type SrO(SrTiO3)n in an (001) SrTiO3 single-crystalline plate by an external electric field and its potential use for adaptive X-ray optics

Reversible tuning of a series of intergrowth phases of the Ruddlesden–Popper type SrO(SrTiO3)n in an (001) SrTiO3 single-crystalline plate by an external electric field and its potential use for adaptive X-ray optics
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通过外部电场可逆调谐 (001) SrTiO3 单晶板中 RuddlesdenâPopper 型 SrO(SrTiO3)n 的一系列共生相及其在自适应 X 射线光学中的潜在用途

DOI:
10.1007/s00339-006-3584-2
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发表时间:
2006
期刊:
Applied Physics A
影响因子:
--
通讯作者:
W. Pompe
W. Pompe
中科院分区:
--
文献类型:
--
作者:
D.C. Meyer;A.A. Levin;T. Leisegang;E. Gutmann;P. Paufler;M. Reibold;H. Lichte;W. Pompe

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具有钙钛矿型结构的(001)SrTiO_3(STO)单晶片在外电场中的近电极区域的可逆结构变化被描述为可调节的和可逆的包含Ruddlesden-Popper(RP)相的显著体积的畴的形成,所述畴的组成为SrO(SrTiO_3)n,其中n可变。讨论了组成变化是由静电场中离子络合物的电迁移引起的,即,通过钙钛矿STO的固态电解。电迁移由电场引发,然后稳定所形成的RP域。RP域可以被描述为与周围的钙钛矿基质相干共生。与钙钛矿STO相比,这些共生体的X射线散射行为表明了自适应X射线光学现象的技术用途。
Reversible structural changes of near-electrode regions of an (001) SrTiO3(STO) single-crystal plate with perovskite-type of structure in an external electric field are described as the tunable and reversible formation of a significant volume of domains containing Ruddlesden–Popper (RP) phases of composition SrO(SrTiO3)nwith variable n. Compositional changes are discussed to be caused by electromigration of ion complexes in the static electric field, i.e., by solid state electrolysis of the perovskite STO. Electromigration is initiated by the electric field which then stabilizes the RP domains formed. The RP domains can be described as coherently intergrown with the surrounding perovskite matrix. The X-ray scattering behaviour of these intergrowths, compared with the perovskite STO, suggests the technical use of the phenomenon for adaptive X-ray optics.
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