Low-field magnetoresistance in manganite thin films

Authors
Vlakhov, ES Dorr, K Muller, KH Handstein, A Nenkov, K Walter, T Chakalov, RA Chakalova, RI Spasov, AY
Citation
Es. Vlakhov et al., Low-field magnetoresistance in manganite thin films, ACT PHY P A, 97(5), 2000, pp. 787-790
Citations number
10
Categorie Soggetti
Physics
Journal title
ACTA PHYSICA POLONICA A
ISSN journal
05874246 → ACNP
Volume
97
Issue
5
Year of publication
2000
Pages
787 - 790
Database
ISI
SICI code
0587-4246(200005)97:5<787:LMIMTF>2.0.ZU;2-K
Abstract
Grain boundaries play an important role in low-field magnetoresistance of L a0.7Ca0.3MnO3 and La0.7Sr0.3MnO3 thin films deposited by magnetron sputteri ng and pulsed laser deposition on YSZ(100) and silicon substrates buffered by YSZ. Well-pronounced low-field magnetoresistance hysteresis was observed in magnetic fields applied in in-plane and out-of-plane directions. High v alues of local magnetoresistance sensitivity d(MR)/dH in the vicinity of th e coercive field were obtained reaching up to 0.2%/Oe for La0.7Ca0.3MnO3 sa mples at 5 K.