1 ML Mn/Fe(001): Is Mn coupling with Fe antiferromagnetic or ferromagnetic?

Andrieu, S.; Finazzi, Marco; Yubero, F.; Fischer, Hélène; Arcade, P.; Chevrier, F.; Hricovíni, K.; Krill, G.; Piécuch, M.

doi:10.1016/s0304-8853(96)00503-3

Cited by 20 publications

(14 citation statements)

References 8 publications

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“…The results presented here are in contrast to the results of Andrieu et al 36 for adsorption of Mn on Fe͑100͒, which indicated for the complete monolayer a ferromagnetic coupling of the Mn moments to the Fe substrate. Using the sum rule, a moment of 1 B was determined for the monolayer.…”

contrasting

confidence: 99%

“…5, 17,18 The discrepancy in the sign of the coupling between the present results and those of Ref. 36 is not caused by the presence of Ag on our Fe surface in the present experiment, since the low substrate temperature quenches the diffusion of Ag to the top of the deposited Fe film. Furthermore, we have observed antiferromagnetic coupling for Mn/Fe/W ͑110͒ ͑Ref.…”

contrasting

confidence: 63%

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Antiferromagnetic coupling of Mn adsorbates to Fe(100)

et al. 1997

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We investigate the magnetic properties of Mn adsorbates on Fe͑100͒ in the regime up to a few monolayers.Magnetic circular dichroism in absorption shows long-range ferromagnetic order for the Mn adsorbate, with antiferromagnetic alignment with respect to the Fe substrate. Element-specific magnetic domain imaging and hysteresis measurements show that the macroscopic magnetic behavior of the Mn adlayer is fully determined by the Fe substrate. For coverages below 0.5 ML the Mn absorption spectra show rich structures that are typical for localized d states. From this the Mn ground state is identified as a mixture of atomiclike d 5 and d 6 states, with a local spin moment of 4.5 B . However, the circular dichroism is 2.4 times smaller than expected for this ground state, suggesting disorder within the Mn adsorbate with an ordered moment of 1.9 B at 120 K. The magnetic signal vanishes near 1 ML coverage, consistent with the theoretically predicted c(2ϫ2) antiferromagnetic ground state of the monolayer.

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contrasting

confidence: 99%

contrasting

confidence: 63%

Antiferromagnetic coupling of Mn adsorbates to Fe(100)

et al. 1997

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“…The sensitivity to parameters in theory-like lattice spacings-is accompanied by that to preparation conditions in experiment [21,27]. However, for thicker films a trend towards an L-AFM structure was established [21,28,29].…”

Section: Introductionmentioning

confidence: 93%

Ultrathin antiferromagnetic films on a ferromagnetic substrate: a first-principles study of Mn on Fe(001)

Ernst

Henk

Thapa

2005

J. Phys.: Condens. Matter

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The electronic and magnetic structures of Mn films with thicknesses of up to 12 monolayers on Fe(001) are investigated by means of first-principles calculations, with a focus on the thicker films. The Mn films show an in-layer antiferromagnetic structure and couple antiferromagnetically to the Fe substrate. The magnetic moments at the Mn surface and at the Mn-Fe interface are significantly enhanced, as compared to the respective bulk values. Several surface states are found at the centre of the two-dimensional Brillouin zone, some of which might explain recent experimental scanning tunnelling spectroscopy results.

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“…The question of obtaining a ferromagnetically coupled Mn has previously been analyzed and has been found to be possible for surfaces 28,29 , however there is no guarantee that a Mn and a Fe atom will have the same magnetic coupling as two identical VCA atoms with Z=25.5. In a further set of calculations, all three site II's were occupied by identical VCA atoms.…”

Section: Influence Of N Vacanciesmentioning

confidence: 99%

Electronic structure and magnetic properties of Mn, Co, and Ni substitution of Fe in Fe4N

et al. 2013

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The magnetic properties of Mn, Co and Ni substituted Fe4N are calculated from first principles theory. It is found that the generalized gradient approximation reproduces with good accuracy the magnetic moment and equilibrium volume for the parent Fe4N structure, with the atomic moment largest for the Fe atom furthest away from the N atom (Fe I site), approaching a value of 3 µB/atom, whereas the Fe atom closer to the N atom (Fe II site) has a moment closer to that of bcc Fe. Substitution of Fe for Mn, Co or Ni, shows an intricate behavior in which the Mn substitution clearly favors the Fe II site, Ni favors substitution on the Fe I site and Co shows no strong preference for either lattice site. Ni and Co substitution results in a ferromagnetic coupling to the Fe atoms, whereas Mn couples antiferromagnetically on the Fe II site and ferromagnetically on the Fe I site. For all types of doping, the total magnetic moment is enhanced compared with Fe4N only in the energetically very unfavorable case of Mn doping at the Fe I site.

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1 ML Mn/Fe(001): Is Mn coupling with Fe antiferromagnetic or ferromagnetic?

Cited by 20 publications

References 8 publications

Antiferromagnetic coupling of Mn adsorbates to Fe(100)

Antiferromagnetic coupling of Mn adsorbates to Fe(100)

Ultrathin antiferromagnetic films on a ferromagnetic substrate: a first-principles study of Mn on Fe(001)

Electronic structure and magnetic properties of Mn, Co, and Ni substitution of Fe in Fe4N

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