Optical Study of the Strain Effects on Pr0.6Ca0.4MnO3 Thin Films

被引：1
|
作者：
Antonakos, A. [1 ]
Liarokapis, E. [1 ]
Filippi, M. [2 ]
Prellier, W. [2 ]
机构：
[1] Natl Tech Univ Athens, Dept Phys, Athens 15780, Greece
[2] ENSICAEN, CNRS UMR 6508, Laboratoire CRISMAT, F-14050 Caen, France
来源：
JOURNAL OF SUPERCONDUCTIVITY AND NOVEL MAGNETISM | 2009年 / 22卷 / 03期
关键词：
Raman; Infrared; Manganites; Thin films; MAGNETIC-FIELD; CHARGE; RESISTIVITY;
D O I：
10.1007/s10948-008-0432-y
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report a systematic Raman and infrared (IR) study of Pr0.6Ca0.4MnO3 (PCMO) thin films grown on SrTiO3 (STO) and LaAlO3 (LAO) substrates (PCMO/STO and PCMO/LAO, respectively). The measurements were performed for a temperature range 78 K < T < 295 K. The A(g)(2) tilting Raman mode has shown substrate dependence, implying an effect of the lattice mismatch on the tilting angle, as the MnO6 octahedra are tilted to optimize the structure. The Raman and the IR modes are affected by the different kinds of strain induced by different substrates. In the mid-IR (MIR) region, there are broad bands implying that FM and AFM clusters are formed and competing even at RT.
引用
收藏
页码：209 / 213
页数：5
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