Structure, magnetic, and magneto-optical properties of MnBi films grown on quartz and (001)GaAs substrates

Harder, K.; Menzel, D.; Widmer, T.; Schoenes, J.

doi:10.1063/1.368537

Cited by 29 publications

(13 citation statements)

References 28 publications

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“…[8][9][10] The peak at 3.6 eV seems to correspond to partially oxidized MnBi, which leads to interband transitions from occupied O(2p) states to unoccupied Mn(3d) states. 6,8,11 This observation is in contrast to previous calculations, where the second maximum in the range of 3.4 eV has been interpreted as an interband transition from occupied Mn(3d) states to unoccupied Bi(6 p) states. 9,10 Variations of the Mn-Bi stoichiometry have been also discussed as the origin for the large experimentally determined polar Kerr rotation in the same spectral region, which is not consistent with first principles band structure calculations of pure MnBi.…”

Section: Introductioncontrasting

confidence: 54%

Micromagnetism and high temperature coercivity of MnBi/Al multilayers

Rüdiger

Güntherodt

Fumagalli

et al. 2000

Journal of Applied Physics

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The micromagnetic properties of multilayered MnBi/Al films have been investigated and compared to pure MnBi thin films. Pure MnBi films reveal an anomalous increase of the high temperature coercivity, which has been explained on the basis of a hybrid domain wall pinning model. The multilayer-type preparation of MnBi/Al thin films results in significantly reduced MnBi particle size of approximately 40 nm. The smaller particle size leads to a change of the dominant magnetization reversal process from one driven by domain wall movement toward coherent rotation. This was investigated via magnetic force microscopy imaging and micromagnetic calculations. The absence of domain walls during magnetization reversal results in a clear suppression of the increase of the high temperature coercivity observed in pure MnBi films.

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Section: Introductioncontrasting

confidence: 54%

Micromagnetism and high temperature coercivity of MnBi/Al multilayers

Rüdiger

Güntherodt

Fumagalli

et al. 2000

Journal of Applied Physics

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“…In order to clarify the role of oxygen in the Kerr spectrum, Harder et al [17] made films similar to those of Di et al, but in ultra-high vacuum, to prevent, or at least reduce, oxygen incorporation in the films. They were made on two different substrates and capped with an SiO protective film.…”

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confidence: 97%

Magneto-optic spectrum and electronic structure of single-crystal MnBi

Brammeier¹,

Park²,

Olson³

et al. 2004

Journal of Magnetism and Magnetic Materials

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“…The MO properties of MnBi were measured by several authors. 2,[24][25][26] The most extensive study was carried out by Di et al 2,25 Their measured Kerr angle spectrum for MnBi has peaks at 1.84 eV and 3.35 eV. The former have a relatively large magnitude of 2.31…”

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confidence: 99%

Magnetic anisotropic effects and electronic correlations in MnBi ferromagnet

et al. 2014

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The electronic structure and numerous magnetic properties of MnBi magnetic systems are investigated using local spin density approximation (LSDA) with on-cite Coulomb correlations (LSDA+U ) included. We show that the inclusion of Coulomb correlations provides a much better description of equilibrium magnetic moments on Mn atom as well as the magnetic anisotropy energy (MAE) behavior with temperature and magneto-optical effects. We found that the inversion of the anisotropic pairwise exchange interaction between Bi atoms is responsible for the observed spin reorientation transition at 90 K. This interaction appears as a result of strong spin orbit coupling on Bi atoms, large magnetic moments on Mn atoms, significant p − d hybridization between Mn and Bi atoms, and it depends strongly on lattice constants. A better agreement with the magneto-optical Kerr measurements at higher energies is obtained. We also present the detailed investigation of the Fermi surface, the de Haas-van Alphen (dHvA) effect and the X-ray magnetic circular dichroism in MnBi.

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Structure, magnetic, and magneto-optical properties of MnBi films grown on quartz and (001)GaAs substrates

Abstract: Epitaxial Mn 2 Sb thin films grown by molecular-beam epitaxy on (001) GaAs and their magnetic and magnetooptical properties

Cited by 29 publications

References 28 publications

Micromagnetism and high temperature coercivity of MnBi/Al multilayers

Micromagnetism and high temperature coercivity of MnBi/Al multilayers

Magneto-optic spectrum and electronic structure of single-crystal MnBi

Magnetic anisotropic effects and electronic correlations in MnBi ferromagnet

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