Tuning Curie temperature of La_(1-x)Sr_xMnO_(3-δ) films by oxygen defect induced lattice strain

摘要

Recently, numerous efforts have been given in controlling the magnetic phase transition temperature by external parameters such as strain, pressure, voltage etc. to escalate researches for the realization of room temperature spintronic devices. In this regard, La_(1-x)Sr_xMnO_(3-δ) (LSMO) has potential for room temperature spintronic applications due to its high Curie temperature (TC), high spin polarization, and half metallicity. Herein, we investigate the effect of oxygen content on the lattice strain and TC of LSMO thin films on (001) oriented SrTiO_3 (STO) substrates.