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1. (WO2008096595) PERPENDICULAR MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING THE MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2008/096595    International Application No.:    PCT/JP2008/050841
Publication Date: 14.08.2008 International Filing Date: 16.01.2008
IPC:
G11B 5/738 (2006.01), G11B 5/84 (2006.01)
Applicants: SHOWA DENKO K.K. [JP/JP]; 13-9, Shiba Daimon 1-chome, Minato-ku, Tokyo 105-8518 (JP) (For All Designated States Except US).
SAKAGUCHI, Ryuji [JP/JP]; (JP) (For US Only).
KUROKAWA, Gohei [JP/JP]; (JP) (For US Only).
SASAKI, Yuzo [JP/JP]; (JP) (For US Only).
KOMATSUDA, Tatsu [JP/JP]; (JP) (For US Only).
SINGH, Amarendra, K. [IN/IN]; (JP) (For US Only)
Inventors: SAKAGUCHI, Ryuji; (JP).
KUROKAWA, Gohei; (JP).
SASAKI, Yuzo; (JP).
KOMATSUDA, Tatsu; (JP).
SINGH, Amarendra, K.; (JP)
Agent: FUKUDA, Kenzo; Kashiwaya Bldg., 6-13, Nishishinbashi 1-chome, Minato-ku, Tokyo 105-0003 (JP)
Priority Data:
2007-027095 06.02.2007 JP
Title (EN) PERPENDICULAR MAGNETIC RECORDING MEDIUM, METHOD OF MANUFACTURING THE MEDIUM AND MAGNETIC RECORDING AND REPRODUCING APPARATUS
(FR) SUPPORT D'ENREGISTREMENT MAGNÉTIQUE PERPENDICULAIRE, PROCÉDÉ DE FABRICATION DU SUPPORT ET DISPOSITIF D'ENREGISTREMENT ET DE REPRODUCTION MAGNÉTIQUE
Abstract: front page image
(EN)In a perpendicular magnetic recording medium having at least a soft magnetic back layer, an underlayer, an intermediate layer and a perpendicular magnetic recording layer on a nonmagnetic substrate, at least one layer in the intermediate layer contains Re as a main component element and contains, as a second main component element, an element having an hcp structure or an element having a bcc structure. The concentration of Re as the main component element of the intermediate layer is within the range from 55 to 99.5 atomic percent. The second component element is Co or Cr.
(FR)Dans un support d'enregistrement magnétique perpendiculaire ayant au moins une couche arrière magnétique souple, une sous-couche, une couche intermédiaire et une couche d'enregistrement magnétique perpendiculaire sur un substrat non magnétique, au moins une couche dans la couche intermédiaire contient du Re comme composant principal et contient, comme second composant principal, un élément ayant une structure hcp ou un élément ayant une structure bcc. La concentration de Re comme élément principal de la couche intermédiaire est comprise dans la plage de 55 à 99,5 pourcent en atomes. Le second composant est du Co ou du Cr.
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, 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, IS, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PG, PH, PL, PT, RO, RS, RU, SC, SD, SE, SG, SK, SL, SM, SV, SY, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LS, MW, MZ, NA, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MT, NL, NO, PL, PT, RO, SE, SI, SK, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)