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1. (WO2017033393) MAGNETIC RECORDING MEDIUM
Latest bibliographic data on file with the International Bureau   

Pub. No.: WO/2017/033393 International Application No.: PCT/JP2016/003367
Publication Date: 02.03.2017 International Filing Date: 15.07.2016
IPC:
G11B 5/65 (2006.01)
G PHYSICS
11
INFORMATION STORAGE
B
INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
5
Recording by magnetisation or demagnetisation of a record carrier; Reproducing by magnetic means; Record carriers therefor
62
Record carriers characterised by the selection of the material
64
comprising only the magnetic material without bonding agent
65
characterised by its composition
Applicants:
富士電機株式会社 FUJI ELECTRIC CO., LTD. [JP/JP]; 神奈川県川崎市川崎区田辺新田1番1号 1-1, Tanabeshinden, Kawasaki-ku, Kawasaki-shi, Kanagawa 2109530, JP
Inventors:
森谷 友博 MORIYA, Tomohiro; JP
中田 仁志 NAKATA, Hitoshi; JP
島津 武仁 SHIMATSU, Takehito; JP
Agent:
特許業務法人 谷・阿部特許事務所 TANI & ABE, P.C.; 東京都港区赤坂2丁目6-20 6-20, Akasaka 2-chome, Minato-ku, Tokyo 1070052, JP
Priority Data:
2015-16507024.08.2015JP
Title (EN) MAGNETIC RECORDING MEDIUM
(FR) SUPPORT D'ENREGISTREMENT MAGNÉTIQUE
(JA) 磁気記録媒体
Abstract:
(EN) The purpose of the present invention is to provide a magnetic recording medium wherein the Curie temperature (Tc) of a magnetic material is able to be decreased without increasing the in-plane coercivity and without causing deterioration of the magnetic characteristics. This magnetic recording medium comprises a substrate and a magnetic recording layer; and the magnetic recording layer contains an FePtRh ordered alloy. The Rh content in the FePtRh ordered alloy is 10 at% or less.
(FR) L'objectif de la présente invention est de pourvoir à un support d'enregistrement magnétique comportant un matériau magnétique dont le point de Curie (Tc) peut être réduit sans augmenter la force coercitive dans le plan et sans provoquer de dégradation des caractéristiques magnétiques. Ce support d'enregistrement magnétique comprend un substrat et une couche d'enregistrement magnétique, et la couche d'enregistrement magnétique contient un alliage ordonné FePtRh. Le contenu de Rh de l'alliage ordonné FePtRh est de 10 en pourcentage atomique ou moins.
(JA) 本発明は、面内保磁力を増加させず、且つ、磁気特性の低下を招くことなく、磁性材料のキュリー温度(Tc)を低下させることができる磁気記録媒体を提供することを目的とする。磁気記録媒体は、基板と、磁気記録層とを含む磁気記録媒体であって、前記磁気記録層は、FePtRh規則合金を含み、前記FePtRh規則合金のRh含有量が10at%以下である。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)