首页 | 本学科首页   官方微博 | 高级检索  
     检索      


Fabrication and magnetic response probed by RF transverse susceptibility in La0.67Ca0.33MnO3 nanowires
Authors:S Chandra  Barnali Ghosh  AK Raychaudhuri  MH Phan  P MukherjeeH Srikanth
Institution:a Department of Physics, University of South Florida, Tampa, FL 33620, USA
b Condensed Matter Physics Department, Universidad de Zaragoza, Zaragoza, Spain
c Unit for Nanoscience, S N Bose National Centre for Basic Science, Kolkata 700098, India
Abstract:The temperature and magnetic field dependence of the radio-frequency (RF) transverse susceptibility (χT) of La0.67Ca0.33MnO3 crystalline nanowires has been studied using a very sensitive self-resonant tunnel-diode oscillator (TDO) technique. The nanowires were synthesized using porous templates of anodized alumina by chemical solution deposition technique, and the crystalline nature of the nanowires with the average diameter of 70 nm was confirmed by TEM, SAED, and HREM. RF transverse susceptibility experiments reveal the presence of a double-peak structure at T≤245 K (the Curie temperature) but a single peak at T>245 K. This distinguishes the low temperature ferromagnetic state from the high temperature paramagnetic state. The effective magnetic anisotropy field (HK), which corresponds to the peak location of χT, has been found to increase with decrease in temperature from the Curie temperature.
Keywords:Manganites  Nanowires  Magnetic anisotropy
本文献已被 ScienceDirect 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号