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Magnetovolume effect in Ho2Fe17-xMnx compounds

Journal Article


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Abstract


  • The structural and magnetic properties of seven compounds in the Ho2Fe17-xMnx series (x = 0-5) have been investigated. The spontaneous magnetization Ms at 10 K exhibits a minimum at x ≈ 3.8 while the 3d-sublattice magnetization MT is found to decrease at ∼ −3.4 μB/per Mn atom compared with the rate of ∼−2.0 μB/per Mn atom expected from a simple dilution model. All of the Ho2Fe17-xMnx compounds exhibit anisotropic thermal expansion below their Curie temperatures leading to the presence of strong magnetovolume effects and Invar-type behavior below TC. An approximately zero volume thermal expansion has been detected between 10 K and 270 K for Ho2Fe17. The maximum magnetic entropy changes for Ho2Fe17-xMnx with x = 0 and 2.0 are 3.2 J kg−1 K−1 around TC ∼ 336 K and 2.7 J kg−1 K−1 around TC ∼ 302 K, respectively, for magnetic field change of B = 0-5 T.

Authors


  •   Wang, Jian Li.
  •   Studer, Andrew J. (external author)
  •   Kennedy, Shane J. (external author)
  •   Zeng, R (external author)
  •   Dou, Shi Xue
  •   Campbell, Stewart J. (external author)

Publication Date


  • 2012

Citation


  • Wang, J. L., Studer, A. J., Kennedy, S. J., Zeng, R., Dou, S. X. & Campbell, S. J. (2012). Magnetovolume effect in Ho2Fe17-xMnx compounds. Journal of Applied Physics, 111 (7), 07A911-1-07A911-3.

Scopus Eid


  • 2-s2.0-84861757324

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7777&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4846

Start Page


  • 07A911-1

End Page


  • 07A911-3

Volume


  • 111

Issue


  • 7

Place Of Publication


  • http://pubs.rsc.org.ezproxy.uow.edu.au/en/journals/journalissues/jm

Abstract


  • The structural and magnetic properties of seven compounds in the Ho2Fe17-xMnx series (x = 0-5) have been investigated. The spontaneous magnetization Ms at 10 K exhibits a minimum at x ≈ 3.8 while the 3d-sublattice magnetization MT is found to decrease at ∼ −3.4 μB/per Mn atom compared with the rate of ∼−2.0 μB/per Mn atom expected from a simple dilution model. All of the Ho2Fe17-xMnx compounds exhibit anisotropic thermal expansion below their Curie temperatures leading to the presence of strong magnetovolume effects and Invar-type behavior below TC. An approximately zero volume thermal expansion has been detected between 10 K and 270 K for Ho2Fe17. The maximum magnetic entropy changes for Ho2Fe17-xMnx with x = 0 and 2.0 are 3.2 J kg−1 K−1 around TC ∼ 336 K and 2.7 J kg−1 K−1 around TC ∼ 302 K, respectively, for magnetic field change of B = 0-5 T.

Authors


  •   Wang, Jian Li.
  •   Studer, Andrew J. (external author)
  •   Kennedy, Shane J. (external author)
  •   Zeng, R (external author)
  •   Dou, Shi Xue
  •   Campbell, Stewart J. (external author)

Publication Date


  • 2012

Citation


  • Wang, J. L., Studer, A. J., Kennedy, S. J., Zeng, R., Dou, S. X. & Campbell, S. J. (2012). Magnetovolume effect in Ho2Fe17-xMnx compounds. Journal of Applied Physics, 111 (7), 07A911-1-07A911-3.

Scopus Eid


  • 2-s2.0-84861757324

Ro Full-text Url


  • http://ro.uow.edu.au/cgi/viewcontent.cgi?article=7777&context=engpapers

Ro Metadata Url


  • http://ro.uow.edu.au/engpapers/4846

Start Page


  • 07A911-1

End Page


  • 07A911-3

Volume


  • 111

Issue


  • 7

Place Of Publication


  • http://pubs.rsc.org.ezproxy.uow.edu.au/en/journals/journalissues/jm