検索結果 290件中 1-20 を表示

  • PdSb添加L1₀-FePt系薄膜の結晶配向性および磁気特性 (特集 磁性材料・磁気デバイスにおけるナノ・マイクロ構造制御)

    柿崎 浩一 , 髙桑 啓 , 神島 謙二

    粉体および粉末冶金 = Journal of the Japan Society of Powder and Powder Metallurgy : 紛体粉末冶金協会誌 64(7), 355-358, 2017-07

  • Magnetic coupling dependence on MgO interlayer thickness of FePt multilayered dots

    Makuta Hirokazu , Iwama Hiroki , Shima Toshiyuki , Doi Masaaki

    … L1<inf>0</inf>-ordered FePt (001) circular dot arrays with the FePt/MgO/FePt multilayered structure have been prepared and the relationship between the magnetic properties and the size of the dots or the MgO intermediate layer thickness has also been investigated. … The dots were microfabricated from continuous films by electron beam lithography and Ar ion milling. …

    Jpn. J. Appl. Phys. 56(5), 055504, 2017-04-11

    応用物理学会

  • PdSb添加L1<sub>0</sub>-FePt系薄膜の結晶配向性および磁気特性

    柿崎 浩一 , 髙桑 啓 , 神島 謙二

    … <p>FePt thin films with L1<sub>0</sub> … thin films with various <i>x</i> … FePt ordered alloy thin films with (001) preferential orientation were achieved in Sb content of <i>x</i> … However, the coercivity of these thin films decreased dramatically due to growing of the crystal grains. …

    粉体および粉末冶金 64(7), 355-358, 2017

    DOI

  • Addition of Ru to L1

    Ono Takuya , Nakata Hitoshi , Moriya Tomohiro , Kikuchi Nobuaki , Okamoto Satoshi , Kitakami Osamu , Shimatsu Takehito

    … The addition of Ru to L1<inf>0</inf>(fct)-FePt thin films was investigated to lower the Curie temperature (T<inf>c</inf>) of the films, which is beneficial for heat-assisted magnetic recording. … The FePtRu films exhibited L1<inf>0</inf>-ordering and perpendicular anisotropy for Ru contents up to at least 18 at. …

    Appl. Phys. Express 9(12), 123002, 2016-11-04

    応用物理学会

  • Magnetization behavior of L1

    Iwama Hiroki , Doi Masaaki , Shima Toshiyuki

    … In order to investigate the effects of lattice mismatch between FePt thin films and single-crystal substrates on the tetragonality and magnetization process, FePt thin films were fabricated on several single-crystal substrates such as KTaO<inf>3</inf>(KTO) (100), MgAl<inf>2</inf>O<inf>4</inf>(MAO) (100), and MgO(100) at a substrate temperature of 700 °C. …

    Jpn. J. Appl. Phys. 55(7S3), 07MC03, 2016-06-20

    応用物理学会

  • In-plane electric field controlled perpendicular magnetic anisotropy in an FePt/[Pb(Mg

    Guo Qi , Xu Xiaoguang , Feng Julong , Liu Pengfei , Wu Yong , Ma Li , Zhou Shiming , Miao Jun , Jiang Yong

    … We report the in-plane electric field controlled perpendicular magnetic anisotropy of L1<inf>0</inf>-FePt films deposited on polarized [Pb(Mg<inf>1/3</inf>Nb<inf>2/3</inf>)O<inf>3</inf>]<inf>0.7</inf>–(PbTiO<inf>3</inf>)<inf>0.3</inf>single crystal substrates. …

    Appl. Phys. Express 9(6), 063005, 2016-04-28

    応用物理学会

  • 東北学院大学工学会 工学部研究報告 FePt磁性薄膜の微細加工と磁気特性

    幕田 裕和 , 高橋 一法 , 岩間 弘樹 , 土井 正晶 , 嶋 敏之

    東北学院大学工学部研究報告 = Science and engineering reports of Tohoku Gakuin University 50(1), 19-25, 2016-02

  • Structure and magnetic properties for FePt thin films prepared on MgAl₂O₄ and MgO substrates

    Iwama H. , Doi M. , Shima T.

    …   In order to investigate the effect of lattice mismatch between FePt thin films and single crystal substrates on the tetragonality and the magnetization process, FePt thin films have been fabricated on MgAl2O4 (MAO) (100) and MgO (100) single crystalline substrates at a substrate temperature of 700 °C. … The Fe concentration in the FePt films was varied from 45.0 to 50.8 at. …

    Journal of the Magnetics Society of Japan 40(4), 91-94, 2016

    J-STAGE DOI

  • Structure and magnetic properties for FePt thin films prepared on MgAl2O4 and MgO substrates

    Iwama H. , Doi M. , Shima T.

    …   In order to investigate the effect of lattice mismatch between FePt thin films and single crystal substrates on the tetragonality and the magnetization process, FePt thin films have been fabricated on MgAl2O4 (MAO) (100) and MgO (100) single crystalline substrates at a substrate temperature of 700 °C. … The Fe concentration in the FePt films was varied from 45.0 to 50.8 at. …

    Journal of the Magnetics Society of Japan advpub(0), 2016

    J-STAGE DOI

  • Structure and Magnetic Properties of (001) Oriented CoPt-Ag and CoPd-Ag Alloy Films

    Nagata T. , Tokuoka Y. , Kato T. [他] , Oshima D. , Iwata S.

    … (001) films (<i>x</i> … = 0-20) were grown on MgO(001) substrate at a temperature of 300°C by molecular beam epitaxy, and their crystal structure and magnetic properties were compared with those of FePt-Ag and FePd-Ag films [Y. … Phys.</i>, <b>115</b>, 17B716 (2014)] for the systematic study of the effect of Ag addition into transition metal - noble metal alloy films. …

    Journal of the Magnetics Society of Japan 40(1), 13-17, 2016

    J-STAGE DOI

  • Structure and Magnetic Properties of (001) Oriented CoPt-Ag and CoPd-Ag Alloy Films

    Nagata T. , Tokuoka Y. , Kato T. , Oshima D. , Iwata S.

    … (001) films (<i>x</i> … = 0-20) were grown on MgO(001) substrate at a temperature of 300°C by molecular beam epitaxy, and their crystal structure and magnetic properties were compared with those of FePt-Ag and FePd-Ag films [Y. … Phys.</i>, <b>115</b>, 17B716 (2014)] for the systematic study of the effect of Ag addition into transition metal - noble metal alloy films. …

    Journal of the Magnetics Society of Japan advpub(0), 2016

    J-STAGE DOI

  • Electric-field manipulation of coercivity in FePt/Pb(Mg

    Liu Mingfeng , Hao Liang , Jin Tianli , Cao Jiangwei , Bai Jianmin , Wu Dongping , Wang Ying , Wei Fulin

    … The effect of electric field (E-field) on the magnetism of FePt thin films in FePt/0.7Pb(Mg<inf>1/3</inf>Nb<inf>2/3</inf>)O<inf>3</inf>–0.3PbTiO<inf>3</inf>(PMN–PT) heterostructures was investigated by anomalous Hall effect measurement. … For FePt films of different thicknesses, the coercivity vs E-field curves show a typical butterfly-like loop behavior. …

    Appl. Phys. Express 8(6), 063006, 2015-05-26

    応用物理学会

  • Alignment of <i>c</i>-Axis Orientation Perpendicular to the Substrate Surface in FePt Alloy Thin Film with <i>L</i>1<sub>0</sub> Structure

    Ohtake Mitsuru , Itabashi Akira , Futamoto Masaaki , Kirino Fumiyoshi , Inaba Nobuyuki

    …   An FePt alloy thin film with <i>L</i>1<sub>0</sub> … In the present study, FePt(2–40 nm) films with and without MgO(2 nm) cap layers are prepared on MgO(001) single-crystal substrates by employing a two-step formation method consisting of low-temperature deposition followed by high-temperature annealing. …

    Journal of the Magnetics Society of Japan 39(5), 167-176, 2015

    J-STAGE DOI

  • Alignment of c-Axis Orientation Perpendicular to the Substrate Surface in FePt Alloy Thin Film with L1₀ Structure

    Ohtake Mitsuru , Itabashi Akira , Futamoto Masaaki [他] , Kirino Fumiyoshi , Inaba Nobuyuki

    …   An FePt alloy thin film with <i>L</i>1<sub>0</sub> … In the present study, FePt(2–40 nm) films with and without MgO(2 nm) cap layers are prepared on MgO(001) single-crystal substrates by employing a two-step formation method consisting of low-temperature deposition followed by high-temperature annealing. …

    Journal of the Magnetics Society of Japan advpub(0), 167-176, 2015

    J-STAGE DOI

  • L1<sub>0</sub> 型 FePtRh 規則合金薄膜の磁気相転移と格子歪みとの相関

    長谷川 崇 , 木村 詩織 , 虻川 卓憲 [他] , Valiullin Albert A. , Kamzin Aleksandr S. , Barton Craig , Thomson Thomas , 石尾 俊二

    FePt<sub>1−<i>x</i></sub>Rh<sub><i>x</i></sub> … thin films (6 nm thick) were studied. … Thin film depositions on varied substrates modifies lattice constants due to misfits between substrates and films, as well as residual stresses caused by rapid thermal annealing. …

    日本金屬學會誌 79(9), 423-428, 2015

    J-STAGE DOI

  • Magnetization Dynamics and Damping for L1₀-FePd Thin Films with Perpendicular Magnetic Anisotropy

    Iihama S. , Khan M. , Naganuma H. [他] , Oogane M. , Miyazaki T. , Mizukami S. , Ando Y.

    … Magnetization dynamics and damping for FePd films were investigated using the all-optical time-resolved magneto-optical Kerr effect. … We deposited 16-nm-thick FePd thin films on a single crystal MgO(001) substrate. … Both in-plane magnetic anisotropy and perpendicular magnetic anisotropy (PMA) FePd films were fabricated using the magnetron sputtering method at various substrate temperatures <i>T</i><sub>s</sub>. …

    Journal of the Magnetics Society of Japan 39(2), 57-61, 2015

    J-STAGE DOI

  • Magnetization Dynamics and Damping for <i>L</i>1<sub>0</sub>-FePd Thin Films with Perpendicular Magnetic Anisotropy

    Iihama S. , Khan M. , Naganuma H. , Oogane M. , Miyazaki T. , Mizukami S. , Ando Y.

    … Magnetization dynamics and damping for FePd films were investigated using the all-optical time-resolved magneto-optical Kerr effect. … We deposited 16-nm-thick FePd thin films on a single crystal MgO(001) substrate. … Both in-plane magnetic anisotropy and perpendicular magnetic anisotropy (PMA) FePd films were fabricated using the magnetron sputtering method at various substrate temperatures <i>T</i><sub>s</sub>. …

    Journal of the Magnetics Society of Japan advpub(0), 2015

    J-STAGE DOI

  • 18pCM-3 X線磁気円二色性分光を用いたFePt超薄膜における電圧誘起磁気異方性変化の評価

    三輪 真嗣 , 松田 健彰 , 鈴木 基寛 , 田中 和仁 , 野崎 隆行 , Frederic Bonell , 湯浅 新治 , 鈴木 義茂

    日本物理学会講演概要集 70.2(0), 956, 2015

    DOI

  • 急速加熱処理による合成鉄白金ナノ粒子配列膜の規則化過程 (磁気記録・情報ストレージ)

    相川 健一郎 , 藤平 誉樹 , 蜂巣 琢磨 [他] , 杉山 敦史 , 逢坂 哲彌 , 山根 明 , 坂脇 彰 , 茂 智雄

    … 我々は,予め化学合成した数ナノメートル径の鉄白金(FePt)ナノ粒子を用いたビットパターンメディア向けの記録層作製プロセスの確立を目指してきた.塗布成膜の改善により粒子配列層の作製を達成してきたが,L1_0規則化相転移のための高温熱処理によって引き起こされるFePtナノ粒子の焼結の改善が課題であった.そこで本検討では,急速加熱(rapid thermal annealing;RTA)による単一L1_0相の成長制御に着目し,孤 …

    電子情報通信学会技術研究報告 = IEICE technical report : 信学技報 114(327), 23-28, 2014-11-25

  • Perpendicular magnetization reversal mechanism of functional FePt films for magnetic storage medium

    Wei Da-Hua , Chi Po-Wei , Chao Chung-Hua

    … Magnetization reversal mechanism and related surface morphology of functional FePt(001) alloy films with large perpendicular magnetic anisotropy have been explored by alternate-atomic-layer deposition onto Pt/MgO(100) substrates via electron beam evaporation, and all evaporated films have been kept at in-situ substrate heating temperature of 400 °C. …

    Jpn. J. Appl. Phys. 53(11S), 11RG01, 2014-09-16

    応用物理学会

ページトップへ