Chemical-order-induced magnetic exchange bias in epitaxial<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" display="inline"><mml:mrow><mml:mi mathvariant="normal">Fe</mml:mi><mml:msub><mml:mi mathvariant="normal">Pt</mml:mi><mml:mn>3</mml:mn></mml:msub></mml:mrow></mml:math>films

Lott, D.; Klose, F.; Ambaye, Haile; Mankey, G. J.; Mani, P.; Wolff, M.; Schreyer, A.; Christen, H. M.; Sales, B. C.

doi:10.1103/physrevb.77.132404

Cited by 14 publications

(7 citation statements)

References 12 publications

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“…The peaks observed around a temperature of 150 K are in agreement with the AC susceptibility associated with a PM-AFM transition, as observed earlier. 11,12,25 The intensity and width of the susceptibility peaks are related to the amount of AFM material present in the sample volume and to a distribution of AFM transition temperatures. The peak in the AC susceptibility of the lowest degree of order is substantially shifted and broadened towards lower values.…”

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Tailoring exchange bias through chemical order in epitaxial FePt3 films

Saerbeck

Zhu

Lott

et al. 2013

Journal of Applied Physics

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Intentional introduction of chemical disorder into mono-stoichiometric epitaxial FePt3 films allows to create a ferro-/antiferromagnetic two-phase system, which shows a pronounced and controllable exchange bias effect. In contrast to conventional exchange bias systems, granular magnetic interfaces are created within the same crystallographic structure by local variation of chemical order. The amount of the exchange bias can be controlled by the relative amount and size of ferromagnetic and antiferromagnetic volume fractions and the interface between them. The tailoring of the magnetic composition alone, without affecting the chemical and structural compositions, opens the way to study granular magnetic exchange bias concepts separated from structural artifacts.

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confidence: 99%

Tailoring exchange bias through chemical order in epitaxial FePt3 films

Saerbeck

Zhu

Lott

et al. 2013

Journal of Applied Physics

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“…For example, PNR has successfully been applied to the investigation of interlayer exchange coupling in magnetic multilayers, 3,4 to determine structural and magnetic degrees of roughness 5,6 or magnetically dead interface layers. 7 The technique also has been utilized to study buried magnetic structures in exchange bias systems [8][9][10][11][12] and non-metallic systems, such as magnetic oxide thin films and semiconductors. [13][14][15][16][17] More recently, PNR has also been used as the source of additional scattering contrast in characterization of soft condensed matter solid/liquid interfaces with a magnetic underlayer.…”

Section: Introductionmentioning

confidence: 99%

Invited Article: Polarization “Down Under”: The polarized time-of-flight neutron reflectometer PLATYPUS

Saerbeck

Klose

Brun

et al. 2012

Review of Scientific Instruments

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This review presents the implementation and full characterization of the polarization equipment of the time-of-flight neutron reflectometer PLATYPUS at the Australian Nuclear Science and Technology Organisation (ANSTO). The functionality and efficiency of individual components are evaluated and found to maintain a high neutron beam polarization with a maximum of 99.3% through polarizing Fe/Si supermirrors. Neutron spin-flippers with efficiencies of 99.7% give full control over the incident and scattered neutron spin direction over the whole wavelength spectrum available in the instrument. The first scientific experiments illustrate data correction mechanisms for finite polarizations and reveal an extraordinarily high reproducibility for measuring magnetic thin film samples. The setup is now fully commissioned and available for users through the neutron beam proposal system of the Bragg Institute at ANSTO.

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“…One is Fe moment order into the (100) plane of alternating FM sheets and the other is Fe moment order into the (110) plane of Fe atoms. 10 This unusual magnetic structure of FePt 3 makes it a little different from other AFM materials, not only for its application in AFM/FM interface devices 18 but also scientifically for its interesting magnetic behavior between ordered and disordered structures and in the origin of two AFM phases depending on the composition of Fe.…”

Section: Introductionmentioning

confidence: 99%