[ ] [Image] [ ] Volume: Page/Article: ------------------------------------------------------------------------ Article Collection: View Collection Help (Click on the [Check Box] to add an article.) ------------------------------------------------------------------------ Phys. Rev. Lett. 75, 1847-1850 (1995) [Issue 9 - 28 August 1995 ] [ Previous article | Next article | Issue 9 contents ] [Add to article collection] View Page Images or PDF (602 kB) ------------------------------------------------------------------------ Giant Near-90° Coupling in Epitaxial CoFe/Mn/CoFe Sandwich Structures M. E. Filipkowski Physics Department, University of Arkansas, Fayetteville, Arkansas 72701 J. J. Krebs and G. A. Prinz Naval Research Laboratory, Washington, D.C. 20375 C. J. Gutierrez Physics Department, Southwest Texas State University, San Marcos, Texas 78666 Received 20 March 1995 Trilayer samples of CoFe/Mn/CoFe(001) have been prepared by molecular beam epitaxy and investigated by magnetometry and ferromagnetic resonance (FMR). Very strong near-90° coupling (up to 2.5 ergs/cm2) between the CoFe layers, with no evidence for 180° coupling, was found in all but the thickest Mn-layer samples. The field dependence of the magnetization requires that the coupling energy have the algebraic form Fc = C+( phi 1- phi 2)2+C-( phi 1- phi 2- pi )2 suggested recently for antiferromagnetic interlayers. The observed angular dependence of both the acoustic and optical FMR modes found can be described by this model. ©1995 The American Physical Society URL: http://link.aps.org/abstract/PRL/v75/p1847 DOI: 10.1103/PhysRevLett.75.1847 PACS: 75.70.Fr, 75.50.Rr, 76.50.+g ------------------------------------------------------------------------ [Add to article collection] View Page Images or PDF (602 kB) [ Previous article | Next article | Issue 9 contents ] ------------------------------------------------------------------------ References (Reference links marked with [dot] may require a separate subscription.) 1. D. M. Edwards, J. Mathon, R. B. Muniz, and M. S. Phan, J. Phys. Condens. Matter 3, 4941 (1991) [[dot] INSPEC]. 2. K. B. Hathaway and J. R. Cullen, J. Magn. Magn. Mater. 104-107, 1840 (1992). 3. R. P. Erickson, K. B. Hathaway, and J. R. Cullen, Phys. Rev. B 47, 2626 (1993). 4. J. C. Slonczewski, J. Magn. Magn. Mater. (to be published); J. Appl. Phys. 75, 6474 (1994) (summary abstract). 5. C. J. Gutierrez, J. J. Krebs, and G. A. Prinz, Appl. Phys. Lett. 61, 2476 (1992). Note that the K1 values listed need to be multiplied by a factor of 105 [[dot] INSPEC]. 6. Y. U. Idzerda (private communication). 7. B. Heinrich and J. F. Cochran, Adv. Phys. 42, 523 (1992); J. C. Slonczewski, Phys. Rev. Lett. 67, 3172 (1991). 8. M. Ruhrig, R. Schafer, A. Hubert, R. Mosler, J. S. Wolf, S. Demokritov, and P. Grünberg, Phys. Status Solidi (a) 125, 635 (1991). 9. J. Unguris, R. J. Celotta, and D. T. Pierce, Phys. Rev. Lett. 67, 140 (1991). 10. A. Fuss, S. Demokritov, P. Grünberg, and W. Zinn, J. Magn. Magn. Mater. 103, L221 (1992) [[dot] INSPEC]. 11. C. J. Gutierrez, J. J. Krebs, M. E. Filipkowski, and G. A. Prinz, J. Magn. Magn. Mater. 116, L305 (1992) [[dot] INSPEC]. 12. V. Chakarian, Y. U. Idzerda, H. J. Lin, C. J. Gutierrez, G. A. Prinz, G. Meigs, and C. T. Chen (to be published). 13. J. A. Borchers (private communication). 14. J. J. Krebs, P. Lubitz, A. Chaiken, and G. A. Prinz, J. Appl. Phys. 67, 5920 (1990); Phys. Rev. Lett. 63, 1643 (1989). ------------------------------------------------------------------------ [Add to article collection] View Page Images or PDF (602 kB) [Show Articles Citing This One] Requires Subscription [ Previous article | Next article | Issue 9 contents ] ------------------------------------------------------------------------ [ APS | APS Journals | PROLA Homepage | Browse | Search ]