Structural and magnetic properties of La2NiMnO6 thin films on LaAlO3 substrate with varying thickness

The magnetoelectric effect in thin films of ferromagnetic semiconductor La2 NiMnO6

“…This behavior of the phonon mode is in accordance with the experimental data . The ferromagnetic to paramagnetic transition temperature is found to decrease with decrease in the film thickness in agreement with the experimental data of Kumar and Kaur (). It is 250 K for and 280 K for .…”

“…Most of the dielectric response of LNMO was found to arise from its low energy IR-active optical phonons, which were shown to couple strongly with its magnetic order [5]. The Raman peaks of the LNMO thin films are blue shifted in comparison to those of bulk LNMO and the shift increases with decreasing film thickness d whereas T C and the saturation magnetization were found to increase with increase of d [6]. The multiferroic behavior in LNMO nanoparticles is observed in Ref.…”

Passivation of the La2NiMnO6 double perovskite to hydroxylation by excess nickel, and the fate of the hydroxylated surface upon heating

“…Nickel precipitates, primarily as LaNiO 3 or La 2 NiO 4 , have been reported, but perhaps the most interesting is an amorphous form of La 2 O 3 , proposed as a sink for lanthanum to create vacancies in the perovskite but for which no direct information from X-ray diffraction (XRD) or other methods of analysis has yet been obtained. La 2 NiMnO 6 samples have been synthesized in single crystal [12], polycrystalline [4,13,14], nanoparticle [15,16] and thin film [4,[17][18][19][20] forms by a variety of methods. Despite their complicated and defect-prone nature, the composition and stability of the La 2 NiMnO 6 surface have received little attention.…”

Phase stability and B-site ordering in La2NiMnO6 thin films

“…2,8,12 It was found that LNMO is rhombohedral (R 3 or R 3c) at high temperature, which transforms to monoclinic (P2 1 /n) or orthorhombic (Pbnm) at low temperature. 13 The coexistence of rhombohedral and monoclinic/orthorhombic phase was observed in LNMO at room temperature. 1,4,14 Moreover, rhombohedral LNMO (R 3) and monoclinic LNMO (P2 1 /n) are partially B-siteordered; [15][16][17] rhombohedral LNMO (R 3c) and orthorhombic LNMO (Pbnm) are completely B-site-disordered.…”

“…14,18 To fulfill the demands for integrated devices, epitaxial thin films of LNMO have been fabricated on different substrates by pulsed laser deposition (PLD). 10,12,13,[18][19][20][21][22][23][24] It is known that the microstructure and physical properties of thin films can be influenced by many factors, e.g., the growth conditions including growth temperature and oxygen pressure, and the epitaxial strain induced by the film-substrate lattice mismatch. 3,22,25,26 For instance, the phase stability and the related physical properties of the BiFeO 3 films were strongly affected by the epitaxial strain.…”