Open AccessDoping Effects Arising From the Substitution of Ti for Mn in the Perovskite Compounds La2/3Ca1/3MnO3
Author(s) -
RW Li,
Wang Zh,
X Chen,
B. G. Shen
Publication year - 1999
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.48.105
Subject(s) - materials science , colossal magnetoresistance , curie temperature , condensed matter physics , ferromagnetism , magnetoresistance , doping , magnetic refrigeration , manganite , metal–insulator transition , spin glass , perovskite (structure) , metal , magnetization , crystallography , magnetic field , chemistry , physics , optoelectronics , quantum mechanics , metallurgy
The magnetic and transport properties of compounds La2/3Ca1/3Mn1-xTixO3(0x0.3) have been investigated. The substitution of Ti for Mn suppresses the ferromagnetism and metal conduction and increases magnetoresistance dramatically. In the case of low doping (x0.04), substituting Ti for 1% Mn lowers Curie temperature TC and metal-insulator transition temperature Tp by about 31 and 26.5K respectively. The magnetic spontaneous state becomes cluster glass state for the compound with x=0.06, and turns into spin-glass state for the compound with x=0.20. The magnetic dilution and the local lattice distortion due to the introduction of Ti are suggested to explain the experimental results.