Magnetocrystalline anisotropy energy in L10-type CoPt single crystals

H. Shima; K. Oikawa; Asaya Fujita; K. Fukamichi; K. Ishida; S. Nakamura; T. Nojima

doi:10.1016/j.jmmm.2004.11.536

Magnetocrystalline anisotropy energy in L1₀-type CoPt single crystals

H. Shima, K. Oikawa, Asaya Fujita, K. Fukamichi, K. Ishida, S. Nakamura, T. Nojima

Institute for Materials Research (IMR) (institute affiliation only)

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

L1₀-type Co_100-xPt_x single crystals were prepared by atomic ordering under compressive stress and the magnetic properties were investigated. The second order magnetocrystalline anisotropy constant K₁ at 298 K exhibits a maximum value of 4.1×10⁷ erg cm^-3 at x=50. On the other hand, the fourth order magnetocrystalline anisotropy constant K₂ becomes minimum at the same composition. The large uniaxial magnetocrystalline anisotropy constant K_U with a low saturation magnetization M _S in L1₀-type Co_100-xPt_x would bring about the thermal stability of the single magnetic domain state, as well as the sharp coherent magnetization reversal.

Original language	English
Pages (from-to)	566-569
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	290-291 PART 1
DOIs	https://doi.org/10.1016/j.jmmm.2004.11.536
Publication status	Published - 2005 Apr

Keywords

Anisotropy-magnetocrystalline
Anisotropy-uniaxial
Ordered alloy

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/j.jmmm.2004.11.536

Cite this

@article{eb4e02a38fe9403abe584b7d1b455875,

title = "Magnetocrystalline anisotropy energy in L10-type CoPt single crystals",

abstract = "L10-type Co100-xPtx single crystals were prepared by atomic ordering under compressive stress and the magnetic properties were investigated. The second order magnetocrystalline anisotropy constant K1 at 298 K exhibits a maximum value of 4.1×107 erg cm-3 at x=50. On the other hand, the fourth order magnetocrystalline anisotropy constant K2 becomes minimum at the same composition. The large uniaxial magnetocrystalline anisotropy constant KU with a low saturation magnetization M S in L10-type Co100-xPtx would bring about the thermal stability of the single magnetic domain state, as well as the sharp coherent magnetization reversal.",

keywords = "Anisotropy-magnetocrystalline, Anisotropy-uniaxial, Ordered alloy",

author = "H. Shima and K. Oikawa and Asaya Fujita and K. Fukamichi and K. Ishida and S. Nakamura and T. Nojima",

year = "2005",

month = apr,

doi = "10.1016/j.jmmm.2004.11.536",

language = "English",

volume = "290-291 PART 1",

pages = "566--569",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

}

TY - JOUR

T1 - Magnetocrystalline anisotropy energy in L10-type CoPt single crystals

AU - Shima, H.

AU - Oikawa, K.

AU - Fujita, Asaya

AU - Fukamichi, K.

AU - Ishida, K.

AU - Nakamura, S.

AU - Nojima, T.

PY - 2005/4

Y1 - 2005/4

N2 - L10-type Co100-xPtx single crystals were prepared by atomic ordering under compressive stress and the magnetic properties were investigated. The second order magnetocrystalline anisotropy constant K1 at 298 K exhibits a maximum value of 4.1×107 erg cm-3 at x=50. On the other hand, the fourth order magnetocrystalline anisotropy constant K2 becomes minimum at the same composition. The large uniaxial magnetocrystalline anisotropy constant KU with a low saturation magnetization M S in L10-type Co100-xPtx would bring about the thermal stability of the single magnetic domain state, as well as the sharp coherent magnetization reversal.

AB - L10-type Co100-xPtx single crystals were prepared by atomic ordering under compressive stress and the magnetic properties were investigated. The second order magnetocrystalline anisotropy constant K1 at 298 K exhibits a maximum value of 4.1×107 erg cm-3 at x=50. On the other hand, the fourth order magnetocrystalline anisotropy constant K2 becomes minimum at the same composition. The large uniaxial magnetocrystalline anisotropy constant KU with a low saturation magnetization M S in L10-type Co100-xPtx would bring about the thermal stability of the single magnetic domain state, as well as the sharp coherent magnetization reversal.

KW - Anisotropy-magnetocrystalline

KW - Anisotropy-uniaxial

KW - Ordered alloy

UR - http://www.scopus.com/inward/record.url?scp=14944363712&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=14944363712&partnerID=8YFLogxK

U2 - 10.1016/j.jmmm.2004.11.536

DO - 10.1016/j.jmmm.2004.11.536

M3 - Article

AN - SCOPUS:14944363712

SN - 0304-8853

VL - 290-291 PART 1

SP - 566

EP - 569

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

ER -