Patent SG-11201807238W-A (SG)
Title: A reader structure
Inventor: ONG CHUN LIAN
IPC: G11B5/39
Filed: 2017-02-28
Abstract: INTERNATIONAL APPLICATION PUBLISHED UNDER THE PATENT COOPERATION TREATY (PCT) (19) World Intellectual Property -, Organization 11111111011110111010101111101011111011101111011010111111011101111101111011111 International Bureau ... ..... ..Yi j ..... .„,,,, (10) International Publication Number (43) International Publication Date WO 2017/151058 Al 8 September 2017 (08.09.2017) WIP0 I PCT (51) International Patent Classification: Fusionopolis Way, #08-01 DSI, Innovis, Singapore G11B 5/39 (2006.01) G11B 5/127 (2006.01) 138634 (SG). (21) International Application Number: (74) Agent: DONALDSON & BURKINSHAW LLP; 24 PCT/SG2017/050091 Raffles Place #15-00 Clifford Centre, Singapore 048621 (SG). (22) International Filing Date: 28 February 2017 (28.02.2017) (81) Designated States (unless otherwise indicated, for every kind of national protection available): AE, AG, AL, AM, (25) Filing Language: English AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, (26) Publication Language: English BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, (30) Priority Data: HN, HR, HU, ID, IL, IN, IR, IS, JP, KE, KG, KH, KN, 10201601586Y 2 March 2016 (02.03.2016) SG KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, (71) Applicant: AGENCY FOR SCIENCE, TECHNOLOGY MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, AND RESEARCH [SG/SG]; 1 Fusionopolis Way, #20- NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, 10, Connexis North Tower, Singapore 138632 (SG). 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, (72) Inventors: ONG, Chun Lian; c/o Data Storage Institute, 2 ZA, ZM, ZW. Fusionopolis Way, #08-01 DSI, Innovis, Singapore 138634 (SG). YUAN, Zhimin; c/o Data Storage Institute, (84) Designated States (unless otherwise indicated, for every 2 Fusionopolis Way, #08-01 DSI, Innovis, Singapore kind of regional protection available): ARIPO (BW, GH, 138634 (SG). ANG, Shiming; c/o Data Storage Institute, 2 GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, = [Continued on next page] (54) Title: A READER STRUCTURE (57) : A reader structure, a method of biasing a free = 200 layer of a reader structure, and a read head are provided, the = — / reader structure comprises a free layer having a reader edge = for interacting with and being proximal to a magnetic media; a first magnetic bias member and a second magnetic bias = — member each provided adjacent to the free layer, the first and = 222 224 second magnetic bias members being configured to have a = 226 230 first magnetisation direction which is substantially parallel to = 228 the reader edge; an additional bias member disposed adjacent 220 to the free layer, the additional bias member further being = = On located proximal to at least one of the first magnetic bias = member and the second magnetic bias member, and the addi- tional bias member being configured to have a magnetisation = _i_MAI =IM L s —› direction that is substantially orthogonal to the first magnet- - M isation direction. = 216 218 212 214 208 206 210 = 202 11 Ot in 0 Il in 11 FIG. 2 ---.... IN 11 © ei O WO 2017/151058 Al MIDEDIMOMOIDIONOIDEMOMOMMIIMMENVOIMIE TZ, UG, ZM, ZW), Eurasian (AM, AZ, BY, KG, KZ, RU, Declarations under Rule 4.17: TJ, TM), European (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, of inventorship (Rule 4.17(iv)) LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, Published: SI, SK, SM, TR), OAPI (BF, BJ, CF, CG, CI, CM, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG). GA, — with international search report (Art. 21(3))