Ac susceptibility of Pr0.5Ca0.5Mn0.99Al0.01O3 at low temperatures
Pr0.5Ca0.5Mn0.99Al0.01O3 compound was prepared by standard solid state reaction to study its ac susceptibility at low temperatures.The X-ray powder diffraction patterns show that the compound is single-phase orthorhombic structure.The cusps of charge ordering and the long range AFM order of the pseudo-CE type are suppressed with Al dopping in Pr0.5Ca0.5MnO3 compound.ZFC and FC magnetization of this compound bifurcate at Tf.The behavior of ac susceptibility at low temperatures is investigated.The intensity of the real component x at the freezing temperature Tf is suppressed with the increase of frequency.Tf is linear with the logarithm of the frequency.The normalized slope P =△Tf/Tf△log10ω,which is much lower than canonical insulating spin glass systems in which 0.06 ≤ P ≤ 0.08.The intensity of x at Tf increases with the increase of frequency.The ground state of this sample is cluster glass.
Ac susceptibility Cluster glass Manganate Magnetization
Jiliang Wang Cheng Qian Li Yu Dawei Qi
College of Science, Northeast Forestry University, Harbin 150040, China Material Science and Engineering College, Northeast Forestry University, Harbin 150040, China College of Science, Northeast Forestry University, Harbin 150040, China;Post-doctoral Mobile Researc
国际会议
广州
英文
127-130
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）