Large magnetocrystalline anisotropy energy of L10-type Co 100-xPtx bulk single crystals prepared under compressive stress

H. Shima, K. Oikawa, Asaya Fujita, K. Fukamichi, K. Ishida

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13 Citations (Scopus)


L10-type Co100-xPtx single crystals in a single variant state were prepared by ordering under a compressive stress in order to determine accurately the uniaxial magnetocrystalline anisotropy constant KU. Both the lattice constants a and c increase with increasing Pt concentration, whereas the axial ratio c/a becomes minimum at x=50. The value of KU directly determined at 298 K exhibits a maximum value of 4.5 × 107 erg cm-3 for 50 at. % Pt. The second- and fourth-order anisotropy constants K1 and K2 determined by the Sucksmith-Thompson method become 4.1 and 0.6 × 10 7 erg cm-3, respectively. The value of K 1+K2 corresponding to the magnetocrystalline energy difference between the c and a axes becomes maximum at x = 50.

Original languageEnglish
Article number112515
Pages (from-to)1-3
Number of pages3
JournalApplied Physics Letters
Issue number11
Publication statusPublished - 2005 Mar 14
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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