This title appears in the Scientific Report :
2005
Please use the identifier:
http://dx.doi.org/10.1103/PhysRevB.72.024419 in citations.
Please use the identifier: http://hdl.handle.net/2128/1172 in citations.
Superferromagnetic domain state of a discontinuous metal insulator multilayer
Superferromagnetic domain state of a discontinuous metal insulator multilayer
Polarized neutron reflectivity (PNR) and magnetometry studies have been performed on the granular multilayer [Co80Fe20(1.3 nm)/Al2O3(3 nm)](10). Due to strong interparticle interactions, a collective superferromagnetic state is encountered. Cole-Cole plots drawn from the complex ac susceptibility ar...
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Personal Name(s): | Bedanta, S. |
---|---|
Petracic, O. / Kentzinger, E. / Kleemann, W. / Rücker, U. / Paul, A. / Brückel, T. / Cardoso, S. / Freitas, P. P. | |
Contributing Institute: |
Streumethoden; IFF-ISM |
Published in: | Physical Review B Physical review / B, 72 72 (2005 2005) 2 2, S. 024419 024419 |
Imprint: |
College Park, Md.
APS
2005
|
Physical Description: |
024419-1 - 024419 -7 |
DOI: |
10.1103/PhysRevB.72.024419 |
Document Type: |
Journal Article |
Research Program: |
Betrieb und Weiterentwicklung der Neutronenquelle FRJ- 2 |
Series Title: |
Physical Review B
72 |
Subject (ZB): | |
Link: |
Get full text OpenAccess |
Publikationsportal JuSER |
Please use the identifier: http://hdl.handle.net/2128/1172 in citations.
Polarized neutron reflectivity (PNR) and magnetometry studies have been performed on the granular multilayer [Co80Fe20(1.3 nm)/Al2O3(3 nm)](10). Due to strong interparticle interactions, a collective superferromagnetic state is encountered. Cole-Cole plots drawn from the complex ac susceptibility are measured as functions of frequency, temperature, and field amplitudes that hint at the relaxation, creep, sliding, and switching regimes of pinned domain walls that are in close agreement with results obtained from simulations. Very slow switching with exponential relaxation under near-coercive fields is confirmed by PNR measurements. The complete absence of spin-flip scattering confirms that the magnetization reversal is achieved merely by domain nucleation and growth. |