TY - JOUR
T1 - Enhancement of magnetic anisotropy of hydrogenated Pd/Co/Pd trilayers
AU - Okamoto, Satoshi
AU - Kitakami, Osamu
AU - Shimada, Yutaka
N1 - Funding Information:
This work is supported by the Research for the Future Program of Japan for the Promotion of Science under Grant No. 97R14701, and the Storage Research Consortium in Japan.
PY - 2002/2
Y1 - 2002/2
N2 - Magnetic and structural properties of Pd/Co/Pd trilayers in hydrogen atmosphere (pressure PH) have been investigated. The Pd layers are well hydrogenated and fully transformed to β-Pd-H phase at PH = 1 atm, but this β phase is distorted along the film normal under the restriction of substrate, and the atomic ratio of H/Pd is estimated to be 0.6. Hydrogenation at low PH gives rise to enhancement of perpendicular magnetic anisotropy Keff. For instance, 3Å-thick Co at PH = 1.3 atm exhibits very high Keff (3.5 × 107erg/cm3) being two times larger than that of as-prepared one (1.6 × 107erg/cm3). Further increase in P(H) decreases Keff gradually, while Keff recovers to some extent after full dehydrogenation.
AB - Magnetic and structural properties of Pd/Co/Pd trilayers in hydrogen atmosphere (pressure PH) have been investigated. The Pd layers are well hydrogenated and fully transformed to β-Pd-H phase at PH = 1 atm, but this β phase is distorted along the film normal under the restriction of substrate, and the atomic ratio of H/Pd is estimated to be 0.6. Hydrogenation at low PH gives rise to enhancement of perpendicular magnetic anisotropy Keff. For instance, 3Å-thick Co at PH = 1.3 atm exhibits very high Keff (3.5 × 107erg/cm3) being two times larger than that of as-prepared one (1.6 × 107erg/cm3). Further increase in P(H) decreases Keff gradually, while Keff recovers to some extent after full dehydrogenation.
KW - Magnetic anisotropy
KW - Trilayers
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U2 - 10.1016/S0304-8853(01)00596-0
DO - 10.1016/S0304-8853(01)00596-0
M3 - Article
AN - SCOPUS:0036465322
SN - 0304-8853
VL - 239
SP - 313
EP - 315
JO - Journal of Magnetism and Magnetic Materials
JF - Journal of Magnetism and Magnetic Materials
IS - 1-3
ER -