Results overview: Found 4 records in 0.01 seconds.
Articles, 4 records found
Articles 4 records found  
1.
4 p, 822.3 KB Nanostructured MnGa films on Si/SiO2 with 20.5 kOe room temperature coercivity / Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik) ; Dumas, Randy K. (University of Gothenburg. Department of Physic) ; Lau, J. W. (National Institute of Standards and Technology (U.S.). Metallurgy Division) ; Mohseni, S. M. (Kungl. Tekniska högskolann. Materialfysik) ; Sani, Sohrab R. (Kungl. Tekniska högskolann. Materialfysik) ; Golosovsky, I. V. (Peterburgskiĭ institut i︠a︡dernoĭ fiziki im. B.P. Konstantinova.) ; Monsen, A. F. (Norges Teknisk-Naturvitenskapelige Universitet. Department of Physics) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Åkerman, Johan (Kungl. Tekniska högskolann. Materialfysik)
Nanostructured Mn67Ga33 films exhibiting high room temperature coercivity (HC = 20. 5 kOe) have been prepared by sputtering onto thermally oxidized Si substrates. Both the morphology and the coercivity of the films can be tuned by varying the growth parameters. [...]
2011 - 10.1063/1.3656457
Journal of applied physics, Vol. 110, Núm. 9 (Nov. 2011) , p. 093902/1-093902/4  
2.
3 p, 409.4 KB Continuously graded anisotropy in single (Fe53Pt47)100−xCux films / Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik) ; Dumas, Randy K. (University of Gothenburg. Department of Physic) ; Fang, Yeyu (Kungl. Tekniska högskolann. Materialfysik) ; Bonanni, Valentina (Kungl. Tekniska högskolann. Materialfysik) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Aakerman, Johan (Kungl. Tekniska högskolann. Materialfysik) ; American Physical Society
We report on continuously graded anisotropy. During deposition, a compositional gradient is achieved by varying the Cu concentration from Cu-rich (Fe53Pt47)70Cu30 to Cu-free Fe53Pt47. The anisotropy gradient is then realized after annealing using the composition dependence of the low-anisotropy (A1) to high-anisotropy (L10) ordering temperature. [...]
2010 - 10.1063/1.3505521
Applied physics letters, Vol. 97, Issue 18 (November 2010) , p. 182504/1-182504/3  
3.
9 p, 2.3 MB Probing vertically graded anisotropy in FePtCu films / Dumas, Randy K. (University of Gothenburg. Department of Physic) ; Fang, Yeyu (Kungl. Tekniska högskolann. Materialfysik) ; Kirby, Brian (Brian J.) (NIST Center for Neutron Research) ; Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik) ; Bonanni, Valentina (Kungl. Tekniska högskolann. Materialfysik) ; Nogués, Josep (Institut Català de Nanociència i Nanotecnologia) ; Aakerman, Johan (Kungl. Tekniska högskolann. Materialfysik)
Field-dependent polarized neutron reflectivity (PNR) and magnetometry are employed to study the magnetic properties of compositionally uniform and graded FePtCu films as a function of annealing temperature (TA). [...]
2011 - 10.1103/PhysRevB.84.054434
Physical review B : condensed matter and materials physics, Vol. 84, N. 5 (Aug. 2011) , p. 054434/1-054434/9  
4.
3 p, 358.5 KB First-order reversal curve analysis of graded anisotropy FePtCu films / Bonanni, Valentina (Kungl. Tekniska högskolann. Materialfysik) ; Fang, Yeyu (Kungl. Tekniska högskolann. Materialfysik) ; Dumas, Randy K. (University of Gothenburg. Department of Physic) ; Zha, Chaolin (Kungl. Tekniska högskolann. Materialfysik) ; Bonetti, Stefano (Kungl. Tekniska högskolann. Materialfysik) ; Nogués, Josep (Centre d'Investigació en Nanociència i Nanotecnologia) ; Aakerman, Johan (Kungl. Tekniska högskolann. Materialfysik) ; American Physical Society
The reversal mechanisms of graded anisotropy FePtCu films have been investigated by alternating gradient magnetometer AGM and magneto-optical Kerr effect MOKE measurements with first-order reversal curve FORC techniques. [...]
2010 - 10.1063/1.3515907
Applied physics letters, Vol. 97, Issue 20 (November 2010) , p. 202501-202503  

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1 Dumas, R.P.
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