Dependence of exchange coupling interaction on micromagnetic constants in hard/soft magnetic bilayer systems
作者： A. J. Zambano , H. Oguchi , I. Takeuchi , Y. Choi , J. S. Jiang
DOI: 10.1103/PHYSREVB.75.144429
关键词:
摘要: To elucidate the dependence of exchange coupling behavior hard/soft magnetic bilayer systems on various micromagnetic constants, length and nucleation field HN were systematically measured five thin-film libraries made soft magnetic/hard bilayers. Hysteresis loops CoPt/FexCo1x 0x1, CoPt/Ni, CoPt/Fe, Sm2Co7/Fe,Co, or Ni, Sm2Co7/Ni using a magnetooptical Kerr effect setup. The one-dimensional model proposed by Leineweber Kronmuller J. Magn. Mater. 176, 145 1997 simulations used to interpret obtained high-throughput investigation. We found that dominant factors determining are hard layer constants saturation magnetization M layer. display direct correlation with domain-wall width have an anticorrelation layers. They not be substantially dependent stiffness A anisotropy K within group materials studied here.
harvard.edu
uta.edu
elsevier.com
sci-hub.se 参考文章(20)
R. Andreescu, M. J. O’Shea, Temperature dependence of coercivity and magnetic reversal in SmCox thin films Journal of Applied Physics. ,vol. 97, pp. 10F302- ,(2005) , 10.1063/1.1852215
T. Leineweber, H. Kronmüller, Micromagnetic examination of exchange coupled ferromagnetic nanolayers Journal of Magnetism and Magnetic Materials. ,vol. 176, pp. 145- 154 ,(1997) , 10.1016/S0304-8853(97)00601-X
Eric E Fullerton, J.S Jiang, S.D Bader, Hard/soft magnetic heterostructures: model exchange-spring magnets Journal of Magnetism and Magnetic Materials. ,vol. 200, pp. 392- 404 ,(1999) , 10.1016/S0304-8853(99)00376-5
J. Zhou, R. Skomski, Y. Liu, Y. C. Sui, W. Liu, D. J. Sellmyer, Rapidly annealed exchange-coupled Sm–Co∕Co multilayers Journal of Applied Physics. ,vol. 97, pp. 10K304- ,(2005) , 10.1063/1.1850814
E.F. Kneller, R. Hawig, The exchange-spring magnet: a new material principle for permanent magnets IEEE Transactions on Magnetics. ,vol. 27, pp. 3588- 3600 ,(1991) , 10.1109/20.102931
J. S. Jiang, J. E. Pearson, Z. Y. Liu, B. Kabius, S. Trasobares, D. J. Miller, S. D. Bader, D. R. Lee, D. Haskel, G. Srajer, J. P. Liu, A new approach for improving exchange-spring magnets Journal of Applied Physics. ,vol. 97, pp. 10K311- ,(2005) , 10.1063/1.1855032
Eiichi Goto, Nobuo Hayashi, Takaaki Miyashita, Keisuke Nakagawa, Magnetization and Switching Characteristics of Composite Thin Magnetic Films Journal of Applied Physics. ,vol. 36, pp. 2951- 2958 ,(1965) , 10.1063/1.1714613
Z. J. Guo, J. S. Jiang, J. E. Pearson, S. D. Bader, J. P. Liu, Exchange-coupled Sm–Co/Nd–Co nanomagnets: correlation between soft phase anisotropy and exchange field Applied Physics Letters. ,vol. 81, pp. 2029- 2031 ,(2002) , 10.1063/1.1504869
Ralph Skomski, J. M. D. Coey, Giant energy product in nanostructured two-phase magnets. Physical Review B. ,vol. 48, pp. 15812- 15816 ,(1993) , 10.1103/PHYSREVB.48.15812
I. Takeuchi, O.O. Famodu, J.C. Read, M.A. Aronova, K.-S. Chang, C. Craciunescu, S.E. Lofland, M. Wuttig, F.C. Wellstood, L. Knauss, A. Orozco, Identification of novel compositions of ferromagnetic shape-memory alloys using composition spreads Nature Materials. ,vol. 2, pp. 180- 184 ,(2003) , 10.1038/NMAT829