Direction of the Effective Magnetic Field at the Nucleus in Ferromagnetic Iron

Hanna, S. S.; Heberle, J.; Perlow, G. J.; Preston, R. S.; Vincent, Didier

doi:10.1103/physrevlett.4.513

Cited by 116 publications

(22 citation statements)

References 7 publications

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“…Hence, knowledge of the direction of the magnetic hyperfine field implies the knowledge of the direction of the spin orientation. 28 The quantum beat pattern depends strongly on the relative orientation of the magnetic moments m ជ with respect to the direction and polarization of the incident synchrotron radiation ͑here, the magnetic field of the incident synchrotron radiation is along the sample normal͒. This is illustrated by the simulated time spectra in Fig.…”

Section: Methodsmentioning

confidence: 98%

Spin structure in perpendicularly magnetized Fe-FePt bilayers

et al. 2010

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We studied the exchange-spring behavior in FePt-Fe hard-soft magnetic heterostructures. We present a study of the spin structure of the soft Fe layer of Fe-FePt bilayers by nuclear forward scattering of synchrotron radiation. The orientation of the Fe moments close to the top of the soft layer was determined quantitatively as a function of the soft-layer thickness. We show that for a few monolayers of Fe, the magnetically hard FePt layer pins the magnetization in the soft Fe layer to the out-of-plane direction. With increasing Fe-layer thickness, the influence of the FePt diminishes and the magnetization cants toward the in-plane Fe͓001͔ direction. The significance of the exchange coupling constant as the relevant parameter for the exchange-spring behavior is demonstrated by one-dimensional micromagnetic simulations.

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Section: Methodsmentioning

confidence: 98%

Spin structure in perpendicularly magnetized Fe-FePt bilayers

et al. 2010

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“…The hyperfine field in a-Fe is antiparallel to the direction of the magnetic moment of the iron atom [10] and to the magnetization. In Figure 2b the vertical axis corresponds to the jc 1 parameter.…”

Section: Measurements and Resultsmentioning

confidence: 98%

Hyperfine Fields in Nanocrystalline Fe0.48Al0.52

et al. 2005

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Mössbauer measurements with circularly polarized radiation were performed on a nanocrystalline, disordered Fe 48 Al 52 alloy. The analysis of the data for various polarization states resulted in the characterization of the hyperfine magnetic field distribution and the dependence of the average z-component of hyperfine field on the chemical environment. An increasing number of Al in the first coordination shell causes not only a decrease of magnetic moments but also introduces noncollinearity.

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“…2). The minus sign in (4) results in the antiparallel orientation of the magnetic hyperfine field and electronic magnetic moment [4]. The shape of the Mössbauer spectrum depends directly on the values and orientations of the vector B.…”

Section: Distribution Of the Hyperfine Fieldmentioning

confidence: 99%

Advantages of Mössbauer polarimetric methods in material studies

et al. 2008

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Mössbauer spectroscopic methods combined with the use of circularly polarized radiation offer element selective, unambiguous measurements of the orientation of hyperfine magnetic field at the nucleus. The paper presents applications of the method in investigations of antiferromagnets and distribution of magnetization inside iron-based nanoparticles. Selected examples showing development of Mössbauer conversion electron polarimetric methods are also reported.

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Direction of the Effective Magnetic Field at the Nucleus in Ferromagnetic Iron

Cited by 116 publications

References 7 publications

Spin structure in perpendicularly magnetized Fe-FePt bilayers

Spin structure in perpendicularly magnetized Fe-FePt bilayers

Hyperfine Fields in Nanocrystalline Fe0.48Al0.52

Advantages of Mössbauer polarimetric methods in material studies

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