Article

Low Temperature Crystallization of Metastable Nickel Manganite Spinel Thin Films

  1. Song Won Ko1,
  2. Heidi M. Schulze2,
  3. David B. Saint John2,
  4. Nikolas J. Podraza3,
  5. Elizabeth C. Dickey4,
  6. Susan S. Trolier-McKinstry1,2

Article first published online: 15 MAY 2012

DOI: 10.1111/j.1551-2916.2012.05201.x

Issue

Journal of the American Ceramic Society

Journal of the American Ceramic Society

Special Issue: SINTERING 2011

Volume 95, Issue 8, pages 2562–2567, August 2012

Additional Information

How to Cite

Ko, S. W., Schulze, H. M., Saint John, D. B., Podraza, N. J., Dickey, E. C., Trolier-McKinstry, S. S. (2012), Low Temperature Crystallization of Metastable Nickel Manganite Spinel Thin Films. Journal of the American Ceramic Society, 95: 2562–2567. doi: 10.1111/j.1551-2916.2012.05201.x

Author Information

  1. 1

    Materials Research Institute, The Pennsylvania State University, University Park, Pennsylvania

  2. 2

    Department of Materials Science and Engineering, The Pennsylvania State University, University Park, Pennsylvania

  3. 3

    Department of Physics and Astronomy, University of Toledo, Toledo, Ohio

  4. 4

    Department of Materials Science and Engineering, North Carolina State University, Raleigh, North Carolina

*Author to whom correspondence should be addressed. e-mail: swk10@psu.edu

Publication History

  1. Issue published online: 3 AUG 2012
  2. Article first published online: 15 MAY 2012
  3. Manuscript Accepted: 17 MAR 2012
  4. Manuscript Received: 7 JAN 2012

Funded by

  • U.S. Army Research Office
  • U.S. Army Research Laboratory. Grant Number: W911NF-0-2-0026

SEARCH

SEARCH BY CITATION

ARTICLE TOOLS

View Full Article (HTML) Get PDF (361K)

Single-phase metastable cubic spinel nickel manganite films, 0.5 ≤ Mn/(Mn+Ni) ≤ 0.8, were produced using chemical solution deposition. Of these, the sample with Mn/(Mn+Ni) = 0.80 showed the lowest electrical resistivity. Films annealed in Argon at 400°C for 5 h exhibit temperature coefficient of resistance values ranging from −3.81 to −3.93%/K and electrical resistivities of ~10 kΩ-cm. It was found by transmission electron microscopy that the metastable spinel phase appeared in both pyrolyzed and post-deposition annealed films. Spectroscopic ellipsometry measurements over the spectral range from 0.75 to 6.0 eV showed that the complex dielectric function spectra (ε = ε1 + iε2) varied as a function of the annealing conditions, due at least in part to changes in film density. Aging experiments have been used to identify variations in resistivity and temperature coefficient of resistance as functions of time to assess material stability. As a result, the aging coefficient was 6.5% for a film with Mn/(Ni+Mn) = 0.80 after aging at 150°C for 500 h.

View Full Article (HTML) Get PDF (361K)