Back to Search
Start Over
Local mapping of strain at grain boundaries in colossal magnetoresistive films using x-ray microdiffraction.
- Source :
-
Journal of Applied Physics . 5/15/2002 Part 1, 2 & 3, Vol. 91 Issue 10, p7742. 3p. 1 Black and White Photograph, 1 Diagram, 1 Graph. - Publication Year :
- 2002
-
Abstract
- Using x-ray submicrobeam, we spatially mapped the strain in epitaxial La[sub l-χ]Sr[sub χ]MnO[sub 3] films grown on SrTiO[sub 3](001) bicrystal substrates. Our results show that there is an elastic strain gradient at the artificial grain boundary, which decays over a length scale of ∼1 µm. The tensile strain at the interior of the grain—due to the lattice mismatch between La[sub l-χ]Sr[sub χ]MnO[sub 3] and SrTiO[sub 3]—relaxes as the film nears the grain boundary, yielding a grain boundary lattice constant which approaches the value of that in bulk La[sub l-χ]Sr[sub χ]MnO[sub 3]. [ABSTRACT FROM AUTHOR]
- Subjects :
- *MAGNETIC films
*MAGNETORESISTANCE
Subjects
Details
- Language :
- English
- ISSN :
- 00218979
- Volume :
- 91
- Issue :
- 10
- Database :
- Academic Search Index
- Journal :
- Journal of Applied Physics
- Publication Type :
- Academic Journal
- Accession number :
- 6666883
- Full Text :
- https://doi.org/10.1063/1.1455609