Journal of Applied Physics AIP's archival journal for significant new results in applied physics. [JAP Home] [All Online Issues: Browse | Search] [Article Purchases] [SPIN Database: Browse | Search] [Forthcoming Abstracts] [HELP] [EXIT] ------------------------------------------------------------------------ Article Collection: [Image] View Collection | Help (Click on the [COLLECT ARTICLE] to add an article.) ------------------------------------------------------------------------ [ Previous / Next Abstract | Issue Table of Contents | Bottom of Page ] Journal of Applied Physics -- April 15, 1997 -- Volume 81, Issue 8, pp. 5215-5217 [Image] Full Text: [ PDF (439 kB) GZipped PS ] Order ------------------------------------------------------------------------ Experimental study of magnetization reversal processes in nonsymmetric spin valve V. S. Gornakov and V. I. Nikitenko Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow 142432, Russia L. H. Bennett, H. J. Brown, M. J. Donahue, W. F. Egelhoff, R. D. McMichael, and A. J. Shapiro National Institute of Standards and Technology, Gaithersburg, Maryland 20899 We have investigated a nonsymmetric bottom giant magnetoresistance spin valve with the structure Si/NiO/Co/Cu/Co/Ta, as well as single ferromagnetic Co layers on antiferromagnetic NiO, with or without a nonmagnetic Cu spacer. Magnetic hysteresis loops have been measured by SQUID magnetometry, and magnetic domain structures have been imaged using an advanced magneto-optical indicator film (MOIF) technique. The MOIF technique demonstrated that the first stage of magnetization reversal is characterized by nucleation of many microdomains. With increasing reversed field, the domain walls move over small distances (5-20 µm) until annihilation. The domain size was observed to increase with the thickness of the Co layer. When an alternating magnetic field was applied, the domain structure was dramatically changed. ©1997 American Institute of Physics. PII: S0021-8979(97)73908-2 doi:10.1063/1.364954 PACS: 75.70.Cn, 75.60.Ej, 72.15.Gd, 73.50.Jt, 75.70.Pa, 75.70.Kw, 78.20.Ls, 75.50.Ee, 75.50.Cc Additional Information ------------------------------------------------------------------------ [Image] Full Text: [ PDF (439 kB) GZipped PS ] Order ------------------------------------------------------------------------ References Citation links [e.g., Phys. Rev. D 40, 2172 (1989)] go to online journal abstracts. Other links (see Reference Information) are available with your current login. Navigation of links may be more efficient using a second browser window. 1. K. M. Krishan, ed., MRS Bull. 20, 24 (1995). 2. J. Urguris, R. J. Celotta, and D. T. Pierce, Phys. Rev. Lett. 69, 1125 (1992). [MEDLINE] 3. L. J. Heyderman, J. N. Chapman, and S. S. P. Parkin, J. Magn. Magn. Mater. 138, 344 (1994). [INSPEC] 4. H. D. 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Dedukh, and V. I. Nikitenko, Appl. Phys. Lett. 66, 1 (1995). 11. G. Nicolis and I. Prigogine, Self-organization in Nonequilibrium Systems: from Dissipative Structures to order through Fluctuations (Wiley, New York, 1977). [Image] The American Institute of Physics is a member of CrossRef. ------------------------------------------------------------------------ [Image] Full Text: [ PDF (439 kB) GZipped PS ] Order ------------------------------------------------------------------------ Citing Articles This list contains links to other online articles that cite the article currently being viewed. 1. Magnetostatic Energy and Stripe Domain Structure in a Ferromagnetic Plate of Finite Width with In-Plane Anisotropy Yu. V. Gulyaev et al., Phys. Solid State 44, 1111 (2002) 2. Current Hysteresis in Magnetic Tunnel Junctions A. M. Baranov et al., Phys. Solid State 43, 1093 (2001) 3. Coercivity in exchange-bias bilayers M. D. Stiles et al., Phys. Rev. B 63, 064405 (2001) 4. Anisotropy-dependent macroscopic domain structure in wedged-permalloy/uniform-FeMn bilayers Kai Liu et al., J. Appl. Phys. 87, 5052 (2000) 5. Magnetic domain reversal in ultrathin Co(001) films probed by giant magnetoresistance measurements S. P. Li et al., Phys. Rev. B 61, 6871 (2000) 6. Direct experimental study of the magnetization reversal process in epitaxial and polycrystalline films with unidirectional anisotropy V. I. Nikitenko et al., J. Appl. Phys. 83, 6828 (1998) 7. Asymmetry of domain nucleation and enhanced coercivity in exchange-biased epitaxial NiO/NiFe bilayers V. I. Nikitenko et al., Phys. Rev. B 57, R8111 (1998) ------------------------------------------------------------------------ [Image] Full Text: [ PDF (439 kB) GZipped PS ] Order [ Previous / Next Abstract | Issue Table of Contents | Top of Page ] ------------------------------------------------------------------------ Article Collection: View Collection Help (Click on the [COLLECT ARTICLE] to add an article.) ------------------------------------------------------------------------ [JAP Home] [All Online Issues: Browse | Search] [SPIN Database: Browse | Search] [HELP] [EXIT] ------------------------------------------------------------------------ [Image] Published by the American Institute of Physics Copyright © American Institute of Physics