Nanostructures of Sm-Co ON Cr thin films

Y. Liu, B. W. Robertson, Z. S. Shan, S. Malhotra, M. J. Yu, S. K. Renukunta, Sy-Hwang Liou, David J Sellmyer

Research output: Contribution to journalArticle

22 Citations (Scopus)

Abstract

The nanostructures of Sm-Co on Cr thin films prepared by dc magnetron sputtering were investigated by high resolution transmission electron microscopy (HRTEM) and diffraction techniques. HRTEM micrographs show that the crystallites in the Sm-Co films, as revealed by the lattice fringes, are distributed discontinuously in the matrix. The matrix is amorphous as indicated by microdiffraction study. The size of the crystallites is in the range of 2~5 nanometers. The volume fraction of the crystallites in the film decreases from 91% to 54% as the argon pressure is increased from 5 mTorr to 30 mTorr. Micrographs recorded in bright field transmission electron microscope (TEM) with a defocus of a few micrometers reveal grain-like structures of about 25 nm in some but not all films. This grain-structure is found to be inherited from the Cr underlayer.

Original languageEnglish (US)
Pages (from-to)4035-4037
Number of pages3
JournalIEEE Transactions on Magnetics
Volume30
Issue number6
DOIs
StatePublished - Nov 1994

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Crystallites
Nanostructures
High resolution transmission electron microscopy
Thin films
Argon
Crystal microstructure
Electron diffraction
Magnetron sputtering
Volume fraction
Electron microscopes

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Electrical and Electronic Engineering

Cite this

Liu, Y., Robertson, B. W., Shan, Z. S., Malhotra, S., Yu, M. J., Renukunta, S. K., ... Sellmyer, D. J. (1994). Nanostructures of Sm-Co ON Cr thin films. IEEE Transactions on Magnetics, 30(6), 4035-4037. https://doi.org/10.1109/20.333981

Nanostructures of Sm-Co ON Cr thin films. / Liu, Y.; Robertson, B. W.; Shan, Z. S.; Malhotra, S.; Yu, M. J.; Renukunta, S. K.; Liou, Sy-Hwang; Sellmyer, David J.

In: IEEE Transactions on Magnetics, Vol. 30, No. 6, 11.1994, p. 4035-4037.

Research output: Contribution to journalArticle

Liu, Y, Robertson, BW, Shan, ZS, Malhotra, S, Yu, MJ, Renukunta, SK, Liou, S-H & Sellmyer, DJ 1994, 'Nanostructures of Sm-Co ON Cr thin films', IEEE Transactions on Magnetics, vol. 30, no. 6, pp. 4035-4037. https://doi.org/10.1109/20.333981
Liu Y, Robertson BW, Shan ZS, Malhotra S, Yu MJ, Renukunta SK et al. Nanostructures of Sm-Co ON Cr thin films. IEEE Transactions on Magnetics. 1994 Nov;30(6):4035-4037. https://doi.org/10.1109/20.333981
Liu, Y. ; Robertson, B. W. ; Shan, Z. S. ; Malhotra, S. ; Yu, M. J. ; Renukunta, S. K. ; Liou, Sy-Hwang ; Sellmyer, David J. / Nanostructures of Sm-Co ON Cr thin films. In: IEEE Transactions on Magnetics. 1994 ; Vol. 30, No. 6. pp. 4035-4037.
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