Signature of Ferromagnetic Phase at Low Temperature in Low-Doped La 0.88 Ca 0.12 MnO 3 Single Crystal

The confirmation of ferromagnetism at low temperature in a low-doped manganites system is always debatable. It is for the first time, electrical, magnetic, and thermal properties have been measured for manganites single crystal of La 0.88 Ca 0.12 MnO 3 by using a floating-zone method. The electrical resistivity shows a perceptible change of resistance at a low temperature which can be viewed as a signature of the ferromagnetic phase. The ferromagnetic phase of the investigated La 0.88 Ca 0.12 MnO 3 single crystal with Curie temperature of T C = 120 K which is in closed agreement with ac -susceptibility measurement. An analysis of the specific heat suggests the transition peak ( T P ) coincides with the T C and attains 1.2 J mol −1 K at 116 K. The magnetoresistance (MR) and temperature coefficient of resistance (TCR) were found to be 69% and 10% respectively, which expands its subtle potential for applications in spintronics and thermistor.