Published November 15, 2006
| Version v1
Journal article
Structural origin of the giant oxygen isotope effect in Re0.5Sr0.5MnO3 perovskites
Creators
- 1. Frank Laboratory of Neutron Physics, Joint Institute for Nuclear Research, 141980 Dubna, Moscow Region (Russian Federation)
- 2. Laboratory for Neutron Scattering, ETH Zuerich and Paul Scherrer Institut, 5232 Villigen PSI (Switzerland)
- 3. RSC, Kurchatov Institute, Kurchatov sq.1, 123182 Moscow (Russian Federation)
- 4. Department of Chemistry, Moscow State University, 119899 Moscow (Russian Federation)
Description
Neutron diffraction experiments with Re0.5Sr0.5MnO3 (Re=152Sm, Nd0.772Tb0.228 and Nd0.544Tb0.456) manganites were initiated for elucidating of the structural reasons for a giant oxygen isotope effect in Sm0.5Sr0.5MnO3. As a result of these experiments it was shown that in all studied compositions, two crystal phases with different type of Jahn-Teller distortions of MnO6 octahedra and different type of magnetic ordering coexist at low temperatures. The data confirm the percolative nature of the metal-insulator transition in Sm compounds upon 16O for 18O substitution due to a sharp (from 65% to 18%) decrease of the ferromagnetic phase fraction
Additional details
Identifiers
- DOI
- 10.1016/j.physb.2006.05.113;
- PII
- S0921-4526(06)01007-6;
Publishing Information
- Journal Title
- Physica. B, Condensed Matter
- Journal Volume
- 385-386
- Journal Page Range
- p. 94-96
- ISSN
- 0921-4526
- CODEN
- PHYBE3
Conference
- Title
- 8. international conference on neutron scattering
- Dates
- 27 Nov - 2 Dec 2005
- Place
- Sydney (Australia)
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 38071014
- Subject category
- S75: CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY;
- Resource subtype / Literary indicator
- Conference
- Descriptors DEI
- CRYSTALS; FERROMAGNETISM; ISOTOPE EFFECTS; MAGNETIZATION; MANGANATES; NEODYMIUM COMPOUNDS; NEUTRON DIFFRACTION; OXYGEN 16; OXYGEN 18; PEROVSKITES; SAMARIUM 152; SAMARIUM COMPOUNDS; STRONTIUM COMPOUNDS; TERBIUM COMPOUNDS
- Descriptors DEC
- ALKALINE EARTH METAL COMPOUNDS; COHERENT SCATTERING; DIFFRACTION; EVEN-EVEN NUCLEI; INTERMEDIATE MASS NUCLEI; ISOTOPES; LIGHT NUCLEI; MAGNETISM; MANGANESE COMPOUNDS; MINERALS; NUCLEI; OXYGEN COMPOUNDS; OXYGEN ISOTOPES; RARE EARTH COMPOUNDS; RARE EARTH NUCLEI; SAMARIUM ISOTOPES; SCATTERING; STABLE ISOTOPES; TRANSITION ELEMENT COMPOUNDS
Optional Information
- Copyright
- Copyright (c) 2006 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.