Antiferromagnetism in a Fe50Pt40Rh10 thin film investigated using neutron diffraction

Lott, D.; Schreyer, A.; Fenske, J.; Schmidt, W.; Schmalzl, K.; Mankey, G. J.; Tartakovskaya, E. V.; Klose, F.; Mani, P.

doi:10.1103/PhysRevB.78.174413

Journal Article

Antiferromagnetism in a Fe50Pt40Rh10 thin film investigated using neutron diffraction

Lott, D. ; Fenske, J. ; Schreyer, A. ; Mani, P. ; Mankey, G. J. ; Klose, F. ; Schmidt, W.FZJ* ; Schmalzl, K.FZJ* ; Tartakovskaya, E. V.

2008
APS College Park, Md.

Physical review / B 78(17), 174413 (2008) [10.1103/PhysRevB.78.174413]

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Please use a persistent id in citations: http://hdl.handle.net/2128/11072 doi:10.1103/PhysRevB.78.174413

Abstract: The temperature-dependent magnetic structure of a 200 nm thick single-crystalline film of Fe50Pt40Rh10 was studied by unpolarized and polarized neutron diffractions. By applying structure factor calculations, a detailed model of the magnetic unit cell was developed. In contrast to former studies on bulk samples, our experimental results show that the film remains in an antiferromagnetic state throughout the temperature range of 10-450 K. Remarkably, it can be demonstrated that the antiferromagnetic structure undergoes a smooth transition from a dominant out-of-plane order with the magnetic moments orientated in-plane to an in-plane order with the magnetic moments orientated perpendicular to the film plane. Theoretically this can be explained by the existence of two competing anisotropy contributions with different temperature dependencies.

Keyword(s): J

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Physics, Condensed Matter

Note: The authors kindly acknowledge enlightening discussions with Margaret Elcombe. This project was supported by U.S. Department of Energy through Grant No. DE-FG02-02ER45966 and National Science Foundation Materials Research Science and Engineering Center program through Grant No. DMR-0213985.

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Appears in the scientific report 2008

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