Magnetic relaxation in La0.250Pr0.375Ca0.375MnO3 with varying phase separation -: art. no. 174426

被引:66
作者
Deac, IG
Diaz, SV
Kim, BG
Cheong, SW
Schiffer, P [1 ]
机构
[1] Penn State Univ, Dept Phys, University Pk, PA 16802 USA
[2] Penn State Univ, Mat Res Inst, University Pk, PA 16802 USA
[3] Univ Babes Bolyai, Dept Phys, R-3400 Cluj Napoca, Romania
[4] Univ Grenoble 1, Fac Phys, F-38041 Grenoble, France
[5] Rutgers State Univ, Dept Phys & Astron, Piscataway, NJ 08854 USA
关键词
D O I
10.1103/PhysRevB.65.174426
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
We have studied the magnetic relaxation properties of the phase-separated manganite compound La0.250Pr0.375Ca0.375MnO3. A series of polycrystalline samples was prepared with different sintering temperatures, resulting in a continuous variation of phase fraction between metallic (ferromagnetic) and charge-ordered phases at low temperatures. Measurements of the magnetic viscosity show a temperature and field dependence which can be correlated to the static properties. Common to all the samples, there appears to be two types of relaxation processes: at low fields associated with the reorientation of ferromagnetic domains and at higher fields associated with the transformation between ferromagnetic and nonferromagnetic phases.
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收藏
页码:1744261 / 1744266
页数:6
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