Structural, topographical and magnetic properties of GdMnO₃ films on the epitaxial and non-epitaxial substrates: SrTiO₃ and Quartz

GdMnO3 (GMO) thin films were deposited on (100) oriented SrTiO3 (STO) and Quartz substrates, by RF Magnetron Sputtering. A film thickness of 320-330 nm was optimized to understand the intriguing role of both substrates on the structural, topographical and magnetic properties of GMO. Orthorhombic phase of GMO is confirmed on both the STO and Quartz substrates. Uniform plane growth is observed in the (100) direction of STO, whereas a polycrystalline feature with an island growth is observed on the Quartz substrate. GMO deposited on both the substrates shows canted antiferromagnetism at -25 K and a paramagnetic-antiferromagnetic transition at TN -47 K. But a cusp representing spin glass transition is observed in GMO coated on Quartz substrate at low temperature ZFC measurements.