Leighton, C. - Search Results - UAB Digital Repository of Documents

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Articles, 6 records found

Articles	6 records found

4 p, 299.5 KB

Tuning exchange bias / Miltenyi, P. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Gierlings, M. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Bamming, M. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; May, U. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Güntherodt, G. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ; Gruyters, M. (Hahn-Meitner Institut Berlin) ; Leighton, C. (University of California, San Diego. Department of Physics) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; American Physical Society
The exchange bias shift of the hysteresis loop, HE, in antiferromagnetic/ferromagnetic layer systems can be easily controlled (within certain limits) by cooling in zero field from different magnetization states above the antiferromagnetic Néel temperature, TN. [...]
1999 - DOI (Digital Object Identifier)

10.1063/1.124998
Applied physics letters, Vol. 75, Issue 15 (October 1999) , p. 2304-2306

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4 p, 306.1 KB

Fabrication and thermal stability of arrays of Fe nanodots / Liu, Kai (University of California, San Diego. Department of Physics) ; Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ; Leighton, C. (University of Minnesota. Department of Chemical Engineering and Materials Science) ; Masuda, H. (Tōkyō Toritsu Daigaku. Department of Applied Chemistry) ; Nishio, K. (Tōkyō Toritsu Daigaku. Department of Applied Chemistry) ; Roshchin, I. V. (University of California, San Diego. Department of Physics) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; American Physical Society
We have fabricated arrays of 60-nm-size magnetic Fe nanodots over a 1-cm2 -size area using nanoporous alumina membranes as shadow masks. The size and size distribution of the nanodots correlate very well with that of the membrane pores. [...]
2002 - DOI (Digital Object Identifier)

10.1063/1.1526458
Applied physics letters, Vol. 81, Num. 23 (November 2002) , p. 4434-4436

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4 p, 394.7 KB

Magneto-optical study of magnetization reversal asymmetry in exchange bias / Tillmanns, A. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Oertker, S. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Beschoten, Bernd (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Güntherodt, G. (Rheinisch-Westfälische Technische Hochschule Aachen. Institut für physikalisches) ; Leighton, C. (University of California, San Diego. Department of Physics) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ; American Physical Society
The asymmetric magnetization reversal in exchange biased Fe/MnF2 involves coherent (Stoner-Wohlfarth) magnetization rotation into an intermediate, stable state perpendicular to the applied field. We provide here the experimentally tested analytical conditions for the unambiguous observation of both longitudinal and transverse magnetization components using the magneto-optical Kerr effect. [...]
2006 - DOI (Digital Object Identifier)

10.1063/1.2392283
Applied physics letters, Vol. 89, Issue 20 (November 2006) , p. 202512

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4 p, 78.3 KB

Asymmetric magnetization reversal in exchange-biased hysteresis loops / Fitzsimmons, M. R. (Los Alamos National Laboratory) ; Yashar, P. (Los Alamos National Laboratory) ; Leighton, C. (University of California, San Diego. Department of Physics) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ; Majkrzak, C. F. (National Institute of Standards and Technology (Estats Units d'Amèrica)) ; Dura, J. (National Institute of Standards and Technology (Estats Units d'Amèrica)) ; American Physical Society
Polarized neutron reflectometry is used to probe the in-plane projection of the net-magnetization vector M of polycrystalline Fe films exchange coupled to twinned (110) MnF2 or FeF2 antiferromagnetic (AF) layers. [...]
2000 - DOI (Digital Object Identifier)

10.1103/PhysRevLett.84.3986
Physical review letters, Vol. 84, Issue 17 (April 2000) , p. 3986-3989

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4 p, 70.8 KB

Coercivity enhancement in exchange biased systems driven by interfacial magnetic frustration / Leighton, C. (University of California, San Diego. Department of Physics) ; Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ; Jönsson-Akerman, B. J. (University of California, San Diego. Department of Physics) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; American Physical Society
We report the temperature and cooling field dependence of the coercivity of exchange biased MnF2/Fe bilayers. When the antiferromagnetic surface is in a state of maximum magnetic frustration and the net exchange bias is zero, we observe a strong enhancement of the coercivity, which is proportional to the exchange coupling between the layers. [...]
2000 - DOI (Digital Object Identifier)

10.1103/PhysRevLett.84.3466
Physical review letters, Vol. 84, Issue 15 (April 2000) , p. 3466-3469

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4 p, 111.9 KB

Two-stage magnetization reversal in exchange biased bilayers / Leighton, C. (University of California, San Diego. Department of Physics) ; Fitzsimmons, M. R. (Los Alamos National Laboratory) ; Yashar, P. (Los Alamos National Laboratory) ; Hoffmann, Axel (Los Alamos National Laboratory) ; Nogués, Josep (Universitat Autònoma de Barcelona. Departament de Física) ; Dura, J. (National Institute of Standards and Technology (Estats Units d'Amèrica)) ; Majkrzak, C. F. (National Institute of Standards and Technology (Estats Units d'Amèrica)) ; Schuller, Ivan K. (University of California, San Diego. Department of Physics) ; American Physical Society
MnF2/Fe bilayers exhibit asymmetric magnetization reversal that occurs by coherent rotation on one side of the loop and by nucleation and propagation of domain walls on the other side of the loop. Here, we show by polarized neutron reflectometry, magnetization, and magnetotransport measurements that for samples with good crystalline "quality" the rotation is a two-stage process, due to coherent rotation to a stable state perpendicular to the cooling field direction. [...]
2001 - DOI (Digital Object Identifier)

10.1103/PhysRevLett.86.4394
Physical review letters, Vol. 86, Issue 19 (May 2001) , p. 4394-4397

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