Epitaxial growth and characterization of CaVO3 thin films

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS

卷:321

Article

Liberati, M.^1,2  Chopdekar, R. V.^2,4  Mehta, V.^2,3  Suzuki, Y.^2,3 

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Adv Light Source, Berkeley, CA 94720 USA

[2] Univ Calif Berkeley, Dept Mat Sci & Engn, Berkeley, CA 94720 USA

[3] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

[4] Cornell Univ, Sch Appl Phys, Ithaca, NY USA

关键词: Magnetic oxide;    Vanadium perovskite;    Thin film;    Pauli paramagnetic;    Pulsed laser deposition;    X-ray absorption;   

DOI  :  10.1016/j.jmmm.2009.04.037

来源: Elsevier

【 摘 要 】

Epitaxial thin films of CaVO3 were synthesized on SrTiO3, LaAlO3 and (La0.27Sr0.73)(Al0.65Ta0.35)O-3 substrates by pulsed laser deposition. All CaVO3 films, independent of epitaxial strain, exhibit metallic and Pauli paramagnetic behavior as CaVO3 single crystals. X-ray absorption measurements confirmed the 4+ valence state for Vanadium ions. With prolonged air exposure, an increasing amount of V3+ is detected and is attributed to oxygen loss in the near surface region of the films. (C) 2009 Elsevier B.V. All rights reserved.

【 授权许可】

Free