Open AccessResearch on order phase and second-entering-type spin glass behavior of La0.3Ca0.7Mn1－xVxO3 system
Author(s) -
Ge Yan,
Qiang Mao,
Guiying Wang,
Huanyin Guo,
Ning Liu
Publication year - 2010
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.59.5759
Subject(s) - antiferromagnetism , spin glass , condensed matter physics , electron paramagnetic resonance , charge ordering , materials science , spin (aerodynamics) , magnetization , phase (matter) , electrical resistivity and conductivity , charge (physics) , paramagnetism , order (exchange) , doping , nuclear magnetic resonance , physics , magnetic field , thermodynamics , finance , quantum mechanics , economics
The influence of V doping at Mn site on charge order and spin order of La0.3Ca0.7MnO3 system has been studied by the measurement of magnetization-temperature (M-T) curves,resistivity-temperature (ρ-T) curves and electron spin resonance (ESR) spectra of samples La0.3Ca0.7Mn1xVxO3 (x=0.05,0.10,0.134,0.20).The results show that, when 0.05≤3≤0.134,charge ordering (CO) phase exists in the system,and the spin order of the system exhibits the serial changes of paramagnetism (PM)—charge ordering (CO)—antiferromagnetism (AFM) with the decrease of temperature.When x=0.20,the charge ordering melts,and the system exhibits second-entering-type spin glass behavior.