Effect of substrate dependence on microstructure and magnetoresistance of lanthanum manganite films

Authors
Chen, GJ Chang, YH Hsu, HW Chai, YL
Citation
Gj. Chen et al., Effect of substrate dependence on microstructure and magnetoresistance of lanthanum manganite films, MAT SCI E B, 84(3), 2001, pp. 182-188
Citations number
22
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING B-SOLID STATE MATERIALS FOR ADVANCED TECHNOLOGY
ISSN journal
09215107 → ACNP
Volume
84
Issue
3
Year of publication
2001
Pages
182 - 188
Database
ISI
SICI code
0921-5107(20010720)84:3<182:EOSDOM>2.0.ZU;2-E
Abstract
The effect of buffered substrates on microstructure and magnetoresistive pr operty of polycrystalline lanthanum manganite films is reported. By electro n microscopy observation, the microstructure of the lanthanum manganite fil ms is strongly influenced by buffer layers. Stresses arising during post an nealing and/or due to the large lattice mismatch in the films were relaxed by forming defect structures in the films. The large negative magnetoresist ance effect is demonstrated. The low field magnetoresistances of about 8-12 % at an external field of 2 KOe were obtained. (C) 2001 Elsevier Science B. V. All rights reserved.