Structural and magnetic properties of cobalt (II) copper (II) phosphate granular layers prepared by an inorganic sol–gel process

• Published in: Materials letters Vol. 57; no. 4; pp. 975 - 981
• Main Authors: El Hourch, N, El Yahyaoui, A, Bouhlassa, S, Errahmani, H, Berrada, A, Schmerber, G, Dinia, A
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.12.2002; Elsevier
• Subjects: Condensed matter: electronic structure, electrical, magnetic, and optical properties; Condensed matter: structure, mechanical and thermal properties; Cross-disciplinary physics: materials science; rheology; Exact sciences and technology; Infrared spectroscopy; Layered compounds; Liquid phase epitaxy; deposition from liquid phases (melts, solutions, and surface layers on liquids); Magnetic properties; Magnetic properties and materials; Magnetic properties of monolayers and thin films; Magnetic properties of surface, thin films and multilayers; Materials science; Methods of deposition of films and coatings; film growth and epitaxy; Physics; Sol–gel chemistry; Structure and morphology; thickness; Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties); Thin film structure and morphology; X-ray diffraction; X-ray diffraction; Infrared spectroscopy; Layered compounds; Sol–gel chemistry; Magnetic properties; Phosphates; Scanning electron microscopy; Inorganic compounds; Transition element compounds; Polycrystals; XRD; Infrared spectra; Experimental study; Sol-gel chemistry; Characterization; Thin films; Magnetometry; Granular materials; Crystal growth from solutions; Spin-on coating; Sol-gel process; Cobalt phosphates; Copper phosphates; Hysteresis
• ISSN: 0167-577X; 1873-4979
• DOI: 10.1016/S0167-577X(02)00909-6

We report on structural and magnetic properties of Co–Cu–P granular layers, prepared by an inorganic sol–gel process. The structural properties were investigated using X-ray diffraction, infrared spectroscopy and scanning electron microscopy. Structural characterisation confirmed the polycrystalline nature of the layers. The compounds present in these layers are Na 3Co 9(PO 4) 7, NaNO 3 and NaCl salts. At room temperature, the magnetic properties of the layers show an evolution of hysteresis loops with the concentration of copper.