• R K Kotnala

Articles written in Bulletin of Materials Science

• Synthesis of Y-Ba-Cu-O superconducting material by citrate chemical route—some observations

We present an overview of our powder synthesis procedure and give some initial results concerning the superconducting properties of YBa2Cu3O7−x.

• Magneto-optical properties of barium ferrite sputtered films

Barium ferrite thin films with perpendicular anisotropy were grown on (111) oriented GGG substrate by rf diode sputtering method. Their magnetic properties were measured. Faraday rotation was measured in the wavelength range 460–800 nm for such sputtered thin films. These films were found quite suitable for magneto-optical recording applications.

• Strain-induced structural, magnetic and ferroelectric properties of heterostructure BST–NZFO nanocomposite thin film at room temperature

Heterostructure Ba$_{0.7}$Sr$_{0.3}$TiO$_3$–Ni$_{0.8}$Zn$_{0.2}$Fe$_2$O$_4$ composite thin films grown on Pt–TiO$_2$–SiO$_2$–Si substrate were prepared by chemical solution process, where Ba$_{0.7}$Sr$_{0.3}$TiO$_3$ layer grew as top/bottom while Ni$_{0.8}$Zn${0.2}$Fe$_2$O$_4$ layer grew as bottom/top. Structural characterization by X-ray diffraction and atomic force microscopy showed the similar crystal structure, different lattice parameters, large lattice strain and small grain size in heterostructures, whatever their deposition sequences. Such heterostructures present simultaneously ferromagnetic and ferroelectric responses at room temperature. Inparticular, an exceptionally large saturation magnetization was observed in one heterostructures film. The growth sequencesof Ba$_{0.7}$Sr$_{0.3}$TiO$_3$ and Ni$_{0.8}$Zn$_{0.2}$Fe$_2$O$_4$ layers on the substrate remarkably affect the magnetic properties of the compositethin films at room temperature.

• # Bulletin of Materials Science

Volume 43, 2020
All articles
Continuous Article Publishing mode

• # Editorial Note on Continuous Article Publication

Posted on July 25, 2019