Abstract
The process of high-pressure torsion (HPT) was applied to control the size and distribution of ferromagnetic Co particles in a Cu–Co alloy. Electron probe microanalysis, X-ray diffraction analysis, and transmission electron microscopy confirmed that the Co particles were significantly refined through fragmentation and dissolved with intense straining by HPT. Magnetoresistance appeared by ~2.5% at 77 K with an isotropic feature corresponding to giant magnetoresistance (GMR). It is demonstrated that HPT is a potential process for creating GMR in the Cu–Co alloy prepared by conventional ingot metallurgy.
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Berkowitz AE, Mitchell JR, Carey MJ, Young AP, Zhang S, Spada FE et al (1992) Phys Rev Lett 68:3745. doi:https://doi.org/10.1103/PhysRevLett.68.3745
Xiao JQ, Jiang JS, Chien CL (1992) Phys Rev Lett 68:3749. doi:https://doi.org/10.1103/PhysRevLett.68.3749
Takanashi K, Park J, Sugawara T, Hono K, Goto A, Yasuda H et al (1996) Thin Solid Films 275:106. doi:https://doi.org/10.1016/0040-6090(95)07064-8
Wang W, Zhu F, Weng J, Xiao J, Lai W (1998) Appl Phys Lett 72:1118. doi:https://doi.org/10.1063/1.120942
Kim IJ, Takeda H, Echigoya J, Kataoka N, Fukamichi K, Shimada Y (1996) Mater Sci Eng A 217–218:363. doi:https://doi.org/10.1016/S0921-5093(96)10347-6
Aizawa T, Zhou C (2000) Mater Sci Eng A 285:1. doi:https://doi.org/10.1016/S0921-5093(00)00709-7
Larde R, Le Breton JM (2005) J Magn Magn Mater 290:1120. doi:https://doi.org/10.1016/j.jmmm.2004.11.471
Rattanasakulthong W, Sirisathitkul C (2005) Physica B 369:160. doi:https://doi.org/10.1016/j.physb.2005.08.010
Massalski TB, Murray JL, Bennett LH, Baker H, Kacprzak L (1987) Binary phase diagrams, vol 1. American Society of Metals, Metals Park, OH, p 758
Rentenberger C, Karnthaler HP (2005) Acta Mater 53:3031. doi:https://doi.org/10.1016/j.actamat.2005.03.016
Waitz T, Kazykhanov V, Karnthaler HP (2004) Acta Mater 52:137. doi:https://doi.org/10.1016/j.actamat.2003.08.036
Sabirov I, Pippan R (2005) Scr Mater 52:1293. doi:https://doi.org/10.1016/j.scriptamat.2005.02.017
Kai M, Horita Z, Langdon TG (2008) Mater Sci Eng A 488:117
Senkov ON, Froes FH, Stolyarov VV, Valiev RZ, Liu J (1998) Nanostruct Mater 10:691. doi:https://doi.org/10.1016/S0965-9773(98)00107-X
Sauvage X, Wetscher F, Pareige P (2005) Acta Mater 53:2127
Sakai G, Horita Z, Langdon TG (2005) Mater Sci Eng A 393:344. doi:https://doi.org/10.1016/j.msea.2004.11.007
Valiev RZ, Estrin Y, Horita Z, Langdon TG, Zehetbauer MJ, Zhu YT (2006) JOM 58(4):33. doi:https://doi.org/10.1007/s11837-006-0213-7
Segal VM, Reznikov VI, Drobyshevskiy AE, Kopylov VI (1981) Russ Metall 1:99
Saito Y, Utsunomiya H, Tsuji N, Sakai T (1999) Acta Mater 47:579. doi:https://doi.org/10.1016/S1359-6454(98)00365-6
Dutkiewicz J, Kuśnierz J, Maziarz W, Lejkowska M, Garbacz H, Lewandowska M et al (2005) Phys Status Solidi 202:2309. doi:https://doi.org/10.1002/pssa.200521235
Stolyarov VV, Gunderov DV, Popov AG, Puzanova TZ, Raab GI, Yavari AR et al (2002) J Magn Magn Mater 242–245:1399. doi:https://doi.org/10.1016/S0304-8853(01)01244-6
Vorhauer A, Rumpf K, Granitzer P, Kleber S, Krenn H, Pippan R (2006) Mater Sci Forum 503–504:299
Suehiro K, Nishimura S, Horita Z (2008) Mater Trans 49:102. doi:https://doi.org/10.2320/matertrans.ME200725
Servi IS, Turnbull D (1966) Acta Metall 14:161. doi:https://doi.org/10.1016/0001-6160(66)90297-5
Fujii T, Tamura T, Kato M, Onaka S (2002) Microsc Microanal 8(Suppl. 2):1434CD
Suryanarayana C (2001) Prog Mater Sci 46:1. doi:https://doi.org/10.1016/S0079-6425(99)00010-9
Acknowledgements
This work was supported in part by a Grant-in-Aid for Scientific Research from the Ministry of Education, Culture, Sports, Science and Technology, Japan, in Priority Areas “Giant Straining Process for Advanced Materials Containing Ultra-High Density Lattice Defects” and in part by Kyushu University Interdisciplinary Programs in Education and Projects in Research Development (P&P).
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Suehiro, K., Nishimura, S., Horita, Z. et al. High-pressure torsion for production of magnetoresistance in Cu–Co alloy. J Mater Sci 43, 7349–7353 (2008). https://doi.org/10.1007/s10853-008-2813-9
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DOI: https://doi.org/10.1007/s10853-008-2813-9