Microscopic picture of magnetic correlation with loss of uniaxial anisotropy upon swift ion beam irradiation in an interlayer coupled system | Zendy

Amitesh Paul | Zendy; Stefan Mattauch | Zendy

Open Access

Microscopic picture of magnetic correlation with loss of uniaxial anisotropy upon swift ion beam irradiation in an interlayer coupled system

Author(s) -

Amitesh Paul,

Stefan Mattauch

Publication year - 2010

Publication title -

new journal of physics

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 1.584

H-Index - 190

ISSN - 1367-2630

DOI - 10.1088/1367-2630/12/10/103003

Subject(s) - anisotropy , physics , condensed matter physics , magnetization , magnetic anisotropy , swift heavy ion , magnetic structure , irradiation , scattering , ion , surface finish , magnetic field , optics , materials science , fluence , nuclear physics , composite material , quantum mechanics

Exclusive evidence of magnetic structure modification has been revealed by depth-sensitive polarized neutron scattering measurements in an antiferromagnetically coupled specimen upon swift heavy ion irradiation. The effects are independent of any structural modifications within the system (such as intermixing or roughness) that may normally have contributed to the changes in magnetic structure as well. The modifications include (a) the loss of uniaxial anisotropy, (b) changes in the variation of the mean magnetization angle and (c) changes in the variation of the lateral and longitudinal magnetic correlation lengths. We explain the changes within the thermal spike model. The possibility of controlling local magnetization can be foreseen from these results, which can be done even without damaging the structure

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