TY - JOUR
T1 - Hydrogen annealing effects on polycrystalline La0.67Ba 0.33MnO3 compound
AU - Cui, Yimin
AU - Zhang, Liuwan
AU - Wang, Chunchang
AU - Shi, Kai
AU - Cao, Bisong
PY - 2006/2
Y1 - 2006/2
N2 - Upon annealing polycrystalline La0.67Ba0.33MnO 3 bulk samples in flowing 95%Ar:5%H2 mixed gas at 700°C for different time, the insulator-metal transition temperature, TP and the amplitude of AC magnetic susceptibility were decreased first, then increased, finally decreased again. While the resistivity was increased monotonically. This anomalous behavior was explained by the combinational effects of oxygen loss and Ba ion vacancies caused by the segregation of Ba ion related impurity phase.
AB - Upon annealing polycrystalline La0.67Ba0.33MnO 3 bulk samples in flowing 95%Ar:5%H2 mixed gas at 700°C for different time, the insulator-metal transition temperature, TP and the amplitude of AC magnetic susceptibility were decreased first, then increased, finally decreased again. While the resistivity was increased monotonically. This anomalous behavior was explained by the combinational effects of oxygen loss and Ba ion vacancies caused by the segregation of Ba ion related impurity phase.
KW - A. Manganites
KW - B. AC Magnetic susceptibility
KW - C. Hydrogen annealing
UR - https://www.scopus.com/pages/publications/27344456827
U2 - 10.1016/j.jmmm.2005.02.008
DO - 10.1016/j.jmmm.2005.02.008
M3 - 文章
AN - SCOPUS:27344456827
SN - 0304-8853
VL - 297
SP - 21
EP - 25
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 1
ER -