Isotopically driven transitions in LaPrCaMnO system

Authors
Babushkina, NA Belova, LM Taldenkov, AN Aksenov, VL Balagurov, AM Pomjakushin, VY Sheptyakov, DV Gorbenko, OY Kaul, AR Kugel, KI Khomskii, DI
Citation
Na. Babushkina et al., Isotopically driven transitions in LaPrCaMnO system, PHYSICA B, 280(1-4), 2000, pp. 323-324
Citations number
5
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA B
ISSN journal
09214526 → ACNP
Volume
280
Issue
1-4
Year of publication
2000
Pages
323 - 324
Database
ISI
SICI code
0921-4526(200005)280:1-4<323:IDTILS>2.0.ZU;2-C
Abstract
The effect of oxygen isotope substitution on transport and magnetic propert ies is studied for (La1-yPry)(0.7)Ca-0.3 MnO3 ceramics and thin films. The temperature dependence of electrical resistivity reveals the metal-insulato r transition induced by the O-16 --> O-18 substitution at y = 0.75 (ceramic s) and y = 0.5 (films on LaAlO3). Neutron powder diffraction at y = 0.75 de monstrates a striking difference between magnetic structures in the samples with O-16 and O-18. Measurements of AC magnetic susceptibility allow us to analyze the magnetic phase diagram and its changes related to the isotope substitution. (C) 2000 Elsevier Science B.V. All rights reserved.