Synchrotron X-Ray Scattering Study of the Substrate Effects on Relaxor Pb(Mg1/3Nb2/3-δ)O3/SrTiO3 Thin Films
Synchrotron X-Ray Scattering Study of the Substrate Effects on Relaxor Pb(Mg1/3Nb2/3-δ)O3/SrTiO3 Thin Films
复制标题
弛豫剂Pb(Mg1/3Nb2/3-δ)O3/SrTiO3薄膜衬底效应的同步辐射X射线散射研究
DOI：
10.1143/jjap.41.6773
复制
发表时间：
2002
影响因子：
1.5
通讯作者：
D. Noh
中科院分区：
文献类型：
--
作者：
S. H. Seo;H. Kang;Y. Yamada;K. Wasa;D. Noh
采用射频磁控溅射法在同轴SrTiO 3（001）（STO）、邻位SrTiO 3（001）和MgO（001）衬底上外延生长了Percent Pb（Mg 1/3 Nb 2/3-δ）O3（PMN）薄膜。利用同步辐射X射线散射技术研究了衬底对PMN薄膜结构的影响。最初PMN膜生长在二维平面层的STO基板上，而它们生长在MgO基板上的三维（3D）岛的形式。随着膜厚的增加，邻近STO上的表面台阶促进了3D岛的生长。在PMN/STO和PMN/vicinal-STO薄膜中，我们还发现了一种未预料到的单斜相，这种单斜相在Pb（Mg_（1/3）Nb_（2/3））O_3 - 35%PbTiO_3体相固溶体中已有报道。随着膜厚的增加，应变弛豫，PMN膜的晶胞结构由四方晶系向其它结构转变。
Perovskite Pb(Mg1/3Nb2/3-δ)O3 (PMN) thin films are grown epitaxially on on-axis SrTiO3 (001) (STO), vicinal SrTiO3 (001), and MgO (001) substrates by radio-frequency magnetron sputtering. The substrate effects on the structure of PMN thin films have been studied using synchrotron X-ray scattering technique. Initially PMN films grow in two-dimensional planar layers on the STO substrates, while they grow in the form of three-dimensional (3D) islands on the MgO substrate. The surface steps on the vicinal STO encourage the 3D island growth as the film thickness increases. We also found an unexpected monoclinic phase in PMN/STO and PMN/vicinal-STO films, which has been reported in bulk Pb(Mg1/3Nb2/3)O3-35%PbTiO3 solid solution. With increasing the film thickness, the unit cell structure of PMN films transforms from tetragonal to other structures as the strain relaxes.
Pb(Mg1/3Nb2/3)O3 极性纳米结构对电场的响应
DOI：
--
发表时间：
2019
期刊：
影响因子：
--
作者：
山口 翔;佐藤幸生;寺西 亮;金子賢治;清水荘雄;谷口博基
通讯作者：
谷口博基