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 studied.
• Electrical resistivity results follow various theoretical models below and above TMI.
• Magnetic measurements are in good agreement with the resistivity results.
• For device application point of view, the temperature coefficient of resistance is found to 17% K−1 and magnetoresistance of 98%.

The crystallographic direction dependence of the electrical-transport, magneto-transport, magnetic and thermal properties of La0.7Ca0.3MnO3 (LCMO) single crystal along c-axis and ab-plane are investigated. The resistivity data shows the metal-insulator transition (TMI) 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 TMI. The dc-magnetization shows ferromagnetic-paramagnetic transition (TC) 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 ∼17% K−1 and 98% respectively.

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