화학공학소재연구정보센터
Materials Research Bulletin, Vol.83, 250-258, 2016
Crystallographic direction dependence of electrical-transport, magneto-transport, magnetic and thermal properties of La0.7Ca0.3MnO3 single crystal
The crystallographic direction dependence of the electrical-transport, magneto-transport, magnetic and thermal properties of La0.3Ca0.3MnO3 (LCMO) single crystal along c-axis and ab-plane are investigated. The resistivity data shows the metal-insulator transition (T-MI) occurs at 211 K along c-axis and 185 K along ab-plane. The electrical resistivity results are investigated by various theoretical models below and above T-MI. The dc-magnetization shows ferromagnetic-paramagnetic transition (T-C) at 208 K along c-axis and at 190 K along ab-plane. Moreover, ac-susceptibility and specific heat measurements reveal the phase transition temperature are in close agreement with the resistivity and magnetization measurements. To implement sensor application and data storage capacity, the temperature coefficient of resistance (TCR) and magnetoresistance (MR) are found to similar to 17% K-1 and 98% respectively. (C) 2016 Elsevier Ltd. All rights reserved.