High Curie temperature for La0.7Sr0.3MnO3 thin films deposited on CeO2/YSZ-based buffered silicon substrates

被引:38
作者
Perna, P. [1 ,2 ,3 ]
Mechin, L. [1 ]
Chauvat, M. P. [4 ]
Ruterana, P. [4 ]
Simon, Ch [5 ]
di Uccio, U. Scotti [2 ,3 ]
机构
[1] Univ Caen Basse Normandie, CNRS, ENSICAEN, GREYC UMR 6072, F-14050 Caen, France
[2] Univ Naples Federico 2, CNR, INFM, CRS Coherentia, I-80126 Naples, Italy
[3] Univ Naples Federico 2, Dipartimento Sci Fis, I-80126 Naples, Italy
[4] Univ Caen Basse Normandie, CNRS, CEA ENSICAEN, CIMAP UMR 6252, F-14050 Caen, France
[5] CNRS, ENSICAEN, CRISMAT UMR 6508, F-14050 Caen, France
关键词
EPITAXIAL-GROWTH; DEVICES; STRAIN; YBA2CU3O7-DELTA; MANGANITES; SI;
D O I
10.1088/0953-8984/21/30/306005
中图分类号
O469 [凝聚态物理学];
学科分类号
070205 ;
摘要
Two kinds of epitaxial structures were grown by standard pulsed laser deposition on (001) Si, namely La0.7Sr0.3MnO3/Bi4Ti3O12/CeO2/YSZ/Si (BTO-based), and La0.7Sr0.3MnO3/SrTiO3/CeO2/YSZ/Si (STO-based) multilayers. The samples were investigated by means of x-ray diffraction, transmission electron microscopy, magnetic and transport measurements. The Curie temperature T-C of the BTO-based samples was found to be higher (360 K) than for the typical reference epitaxial LSMO film grown on (001) SrTiO3 single crystal (345 K), due to high compressive in-plane strain. The STO-based samples show high structural quality, low roughness and high T-C (350 K), making them interesting candidates for use in innovative LSMO-based bolometers or spintronic devices operating at room temperature.
引用
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页数:5
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