The influence of epitaxial strain, in the form of tetragonal distortions, on the magnetic and magnetotransport properties of La0.67Sr0.33MnO3 thin films was studied. The tetragonal distortion (c/a ratio) was modulated through the choice of the substrate, ranging from c/a=1.007 on (001)-oriented (LaAlO3)0.3(Sr2AlTaO6)0.7 substrates to 0.952 on (110)-oriented GdScO3 substrates. In agreement with previous theoretical predictions, these large values of tensile strain cause the Curie temperature and the saturation magnetization to decrease, alter the temperature dependence of the resistivity and magnetoresistance, and increase the resistivity by several orders of magnitude.
Published in:
Applied Physics Letters
(Volume:92
,
Issue:
16
)
Date of Publication:
Apr 2008
- Page(s):
-
162504
-
162504-3
- ISSN :
-
0003-6951
- Digital Object Identifier :
-
10.1063/1.2908051
- Date of Current Version :
-
18 June 2009
- Issue Date :
-
Apr 2008