<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mi>Pt</mml:mi></mml:math>-enhanced anisotropic magnetoresistance in<mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"><mml:mrow><mml:mi>Pt</mml:mi><mml:mo>/</mml:mo><mml:mi>Fe</mml:mi></mml:mrow></mml:math>bilayers

Li, Junxue; Jia, Mengwen; Ding, Zhaofeng; Liang, Jianhui; Luo, Yansheng; Wu, Y. Z.

doi:10.1103/physrevb.90.214415

Cited by 32 publications

(19 citation statements)

References 35 publications

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“…As observed, the normalized magnetoresistance in R L (), R()/R L0 , is present for different Pt thicknesses and for all temperatures, being largest for the case of the thickest Pt. The fact that this contribution decreases when reducing thickness rules out that it arises from a proximity effect which should be more relevant for thinner films [49]. Additionally, Fig.…”

Section: Iiia Angle Dependent Magnetoresistance Measurementsmentioning

confidence: 99%

Spin Hall Magnetoresistance as a Probe for Surface Magnetization inPt/CoFe2O4Bilayers

et al. 2016

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We study the spin Hall magnetoresistance (SMR) in Pt grown in situ on CoFe 2 O 4 (CFO) ferrimagnetic insulating (FMI) films. A careful analysis of the angle-dependent and fielddependent longitudinal magnetoresistance indicates that the SMR contains a contribution that does not follow the bulk magnetization of CFO but it is a fingerprint of the complex magnetism at the surface of the CFO layer, thus signaling SMR as a tool for mapping surface magnetization. A systematic study of the SMR for different temperatures and CFO thicknesses gives us information impossible to obtain with any standard magnetometry technique. On one hand, surface magnetization behaves independently of the CFO thickness and does not saturate up to high fields, evidencing that the surface has its own anisotropy. On the other hand, characteristic zero-field magnetization steps are not present at the surface while they are relevant in the bulk, strongly suggesting that antiphase boundaries are the responsible of such intriguing features. In addition, a contribution from ordinary magnetoresistance of Pt is identified, which is only distinguishable due to the low resistivity of the in-situ grown Pt.

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Section: Iiia Angle Dependent Magnetoresistance Measurementsmentioning

confidence: 99%

Spin Hall Magnetoresistance as a Probe for Surface Magnetization inPt/CoFe2O4Bilayers

et al. 2016

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“…The two lowest order uniaxial anisotropies are k 1 and k 2 with k e f f defined as k 1 − 2πM 2 s . The equilibrium angle φ m is obtained by minimizing the free energy with respect to φ m , and the anisotropy field l(φ m ) can be expressed as follows: [24][25][26][27] …”

Section: Resultsmentioning

confidence: 99%

“…1(b)]. We first grew a 3nm Pt buffer layer by pulsed laser deposition (PLD) with a 248 nm KrF excimer laser at a rate of 9 Hz, 24 then grew 10 periods of Pt/Co/Cu segments on top. The thickness of Pt and Cu layer in each segment are 0.7nm and 0.4nm respectively, which are thin enough to ferromagnetically couple the Co magnetizations in the neighboring segments.…”

Section: Methodsmentioning

confidence: 99%

Magnetic stripe domains of [Pt/Co/Cu]10 multilayer near spin reorientation transition

et al. 2016

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The dependence of magnetic anisotropy, magnetic domain patterns and magnetization reversal processes in [Pt/Co(tCo)/Cu]10 film stack epitaxied on Cu (111) substrate have been studied as a function of the Co layer thickness tCo, by magneto-optic polar Kerr magnetometry and microscopy. We find the film undergoes spin reorientation transition from out-of-plane to in-plane as tCo increases. The SRT thickness is verified by Rotating-field Magneto-Optic Kerr effect method. The film exhibits the stripe domain structures at remanence with the width decreasing while tCo approaches SRT. As demonstrated by the first order reversal curve measurement, the magnetization reversal process encompasses irreversible domain nucleation, domain annihilation at large field and reversible domain switching near remanence.

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“…This behavior was distinctly different from all other known MR effects including the SMR, and the new MR was termed as the hybrid MR. Immediately, the proposal of hybrid MR caused a more intense argument [7][8][9][10][11][12][13]. To understand the nature of MR in YIG/Pt films, Lin et al [7] and Miao et al [8] suggested two compromised solutions.…”

Section: Introductionmentioning

confidence: 97%

Spin Hall magnetoresistance in an ultrathin Co2FeAl system

Zhang

Sun

et al. 2016

Journal of Magnetism and Magnetic Materials

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a b s t r a c tSpin Hall magnetoresistance (SMR) is observed in an ultrathin Co 2 FeAl layer covered by a thin Pt film. The Co 2 FeAl layer grown on a MgO substrate should be too thin to be continuous. The result reveals that the magnetic insulator layer, such as yttrium iron garnet (YIG) substrate which is frequently used so far, is actually not a requisite for the observation of SMR. This work may greatly help to understand the true nature of SMR effect.

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Pt-enhanced anisotropic magnetoresistance inPt/Febilayers

Cited by 32 publications

References 35 publications

Spin Hall Magnetoresistance as a Probe for Surface Magnetization inPt/CoFe2O4Bilayers

Spin Hall Magnetoresistance as a Probe for Surface Magnetization inPt/CoFe2O4Bilayers

Magnetic stripe domains of [Pt/Co/Cu]10 multilayer near spin reorientation transition

Spin Hall magnetoresistance in an ultrathin Co2FeAl system

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