INVESTIGADORES
CANEIRO Alberto
artículos
Título:
Discontinuous Evolution of the Highly Distorted Orthorhombic Structure and the Magnetic Order in LaMnO36d Perovskite
Autor/es:
F. PRADO; R.D. SANCHEZ; A. CANEIRO; M.T. CAUSA; M. TOVAR
Revista:
JOURNAL OF SOLID STATE CHEMISTRY
Editorial:
ACADEMIC PRESS INC ELSEVIER SCIENCE
Referencias:
Lugar: Amsterdam; Año: 1999 vol. 146 p. 418 - 427
ISSN:
0022-4596
Resumen:
In this work we present a systematic study of the crystallographicstructure and the magnetic ordering of LaMnO36d perovskites.Changing the oxygen composition within the range2.995 < 36d < 3.140, we found a 31d1 value (3.04 < 31d1 <3.05) which de5nes a boundary in the magnetic phase diagramT vs 36d. For 31d < 31d1 , antiferromagnetic order is presentin the samples with a small ferromagnetic component, while forlarge 31d values (31d > 31d1) the samples are ferromagnetic.The transition from one region to the other is associated witha change in volume of around 1%.
