Ferromagnetic nanocomposite films from thermally labile nitride precursors

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Description

A series of nanocomposite films containing Ni or Co nitride dispersed in a ceramic matrix of Al nitride, B nitride, or Sio nitride, were prepared by reactive sputtering of selected alloys or compounds such as Ni aluminide or Co silicide. Thermal treatment of the nitride composites in vacuum at {le}500 C leads to selective loss of N from CoN or Ni{sub 3}N to generate dispersions of the metal in the ceramic matrix. This treatment may be performed in a localized manner by means of a focused laser beam to generate microscopic features that are imaged by magnetic force microscopy. The ... continued below

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9 p.

Creation Information

Maya, L.; Paranthaman, M.; Thompson, J.R.; Thundat, T. & Stevenson, R.J. December 31, 1996.

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Description

A series of nanocomposite films containing Ni or Co nitride dispersed in a ceramic matrix of Al nitride, B nitride, or Sio nitride, were prepared by reactive sputtering of selected alloys or compounds such as Ni aluminide or Co silicide. Thermal treatment of the nitride composites in vacuum at {le}500 C leads to selective loss of N from CoN or Ni{sub 3}N to generate dispersions of the metal in the ceramic matrix. This treatment may be performed in a localized manner by means of a focused laser beam to generate microscopic features that are imaged by magnetic force microscopy. The films are potentially useful for data storage with superior chemical and mechanical stability provided by the ceramic matrix and high encoding density made possible because of the size of the magnetic particles of less than 10 nm generated in the thermal treatment. The films were characterized by chemical and physical means including FTIR, TEM, MFM, and magnetic measurements. Preliminary results on similar iron composites are also described.

Physical Description

9 p.

Notes

OSTI as DE97001307

Source

  • 1996 Fall meeting of the Materials Research Society (MRS), Boston, MA (United States), 2-6 Dec 1996

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  • Other: DE97001307
  • Report No.: CONF-961202--20
  • Grant Number: AC05-96OR22464
  • Office of Scientific & Technical Information Report Number: 436384
  • Archival Resource Key: ark:/67531/metadc678611

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  • December 31, 1996

Added to The UNT Digital Library

  • July 25, 2015, 2:20 a.m.

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  • Jan. 25, 2016, 12:49 p.m.

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Maya, L.; Paranthaman, M.; Thompson, J.R.; Thundat, T. & Stevenson, R.J. Ferromagnetic nanocomposite films from thermally labile nitride precursors, article, December 31, 1996; Tennessee. (digital.library.unt.edu/ark:/67531/metadc678611/: accessed September 19, 2017), University of North Texas Libraries, Digital Library, digital.library.unt.edu; crediting UNT Libraries Government Documents Department.