Static and dynamic behavior of the cluster phase in LaMn.sub.0.6./sub.Co.sub.0.4./sub.O.sub.3./sub..

0342328 - FZÚ 2011 RIV NL eng J - Článek v odborném periodiku
Maryško, Miroslav - Jirák, Zdeněk - Knížek, Karel - Autret-Lambert, C.
Static and dynamic behavior of the cluster phase in LaMn_0.6Co_0.4O₃.
Journal of Magnetism and Magnetic Materials. Roč. 322, 9-12 (2010), s. 1392-1395. ISSN 0304-8853. E-ISSN 1873-4766.
[Joint European Magnetic Symposia (JEMS 08) /4./. Dublin, 14.09.2008-19.09.2008]
Grant CEP: GA ČR GA202/06/0051
Výzkumný záměr: CEZ:AV0Z10100521
Klíčová slova: perovskite manganite-cobaltite * ferromagnetic ordering * relaxation
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus
Impakt faktor: 1.689, rok: 2010
www.elsevier.com/locate/jmmm

TA non-uniform magnetic state in the perovskite system LaMn0.6Co0.4O3 has been studied by magnetometric methods.Two ferromagnetic (FM) critical temperatures are observed.The first one at Tc=217 K is ascribed to the onset of FM state in the Mn4+/Co2+-ordered domains(phase 1), while the disordered regions containing Mn4+, Mn3+,Co3+ and Co2+ valence states (phase 2) remain in the paramagnetic state. Below Tc=147 K a long-range FM arrangement develops also in certain part of phase 2, but the major part of phase 2 is formed by polydisperse FM clusters.
Trvalý link: http://hdl.handle.net/11104/0185087