Doping (additives) Lanthanum compounds Magnetic properties Perovskite Divalent manganese Divalent valence state X-ray absorption finite structure Manganites
Issue Date:
2008
Publisher:
Journal of Applied Physics
Citation:
Volume: 103, Issue: 7
Abstract:
Local structure and magnetic properties of Ti doped A -site deficient La0.6 Sr0.4-x Mn Tix O3+??
manganites (0.15x0) have been studied. The compositions belong to rhombohedral R 3- c phase.
Segregation of (La0.6 Sr0.4-x Mny) (Mn1-y-z Tix) O3+?? phase and fallout of (z3) Mn3 O4 oxide was
observed with x increase. Some amount (y) of Mn, being in divalent valence state, occupies the A (=La,Sr) -
position of perovskite cell. Samples with x=0 and 0.05 are ferromagnetic with Curie temperature TC =350
and 172 K, respectively. Samples with x=0.1 and 0.15 are in spin(cluster)-glass states at low temperatures.
?? 2008 American Institute of Physics.
