YNixMn1−xO3 thin films by pulsed laser deposition: Structure and magnetic properties

Yanwei Ma , Maryline Guilloux-Viry (1) , P. Barahona (1) , Octavio Peña (1) , C. Mourec , Jalal Ghilane (1) , Philippe Hapiot (1)

1 ISCR - Institut des Sciences Chimiques de Rennes

Highly oriented YNixMn1−xO3 thin films on SrTiO3 (100) substrates were achieved by using pulsed laser deposition for x = 0.33 and x = 0.50. We used a combination of X-ray diffraction, scanning electron microscopy, atomic force microscopy, and magnetic-property measurements. The magnetic transition temperatures (Tc) of the as-grown films are higher than the corresponding bulk values (typically 85 K instead of 80 K, for x = 0.5, and 60 K instead of 50 K, for x = 0.33). Our magnetic measurements also suggest a spin-glass characteristic in the x = 0.33 films, while a cluster glasslike behavior is observed for the films with x = 0.5, which is quite different from that of the bulk samples. Finally, the influence of post-deposition heat treatment on the magnetic properties of the as-grown films is discussed

Mots clés: Pulsed laser deposition; Magnetic properties; Surface morphology; Doped manganite

Domaines: Chimie-Physique [physics.chem-ph]; Chimie organique

Yanwei Ma, Maryline Guilloux-Viry, P. Barahona, Octavio Peña, C. Mourec, et al.. YNixMn1−xO3 thin films by pulsed laser deposition: Structure and magnetic properties. Thin Solid Films, 2006, 510 (1-2), pp.275-279. ⟨10.1016/j.tsf.2005.12.159⟩. ⟨hal-00176734⟩