Thickness and composition dependencies of magnetization and perpendicular magnetic anisotropy of Heusler-like alloys based <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mrow><mml:msub><mml:mrow><mml:mtext>Mn</mml:mtext></mml:mrow><mml:mrow><mml:mtext>x</mml:mtext></mml:mrow></mml:msub><mml:mtext>Ga</mml:mtext><mml:mo>|</mml:mo><mml:msub><mml:mrow><mml:mtext>Co</mml:mtext></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mtext>FeAl</mml:mtex

Zhang, Q.Y.; Cui, Hong‐Ling; Tian, Chunling; Chen, H.; Wang, J.Z.; Yuan, Hongkuan

doi:10.1016/j.jallcom.2018.09.102

Cited by 6 publications

(3 citation statements)

References 70 publications

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“…Single molecule magnets (SMMs) have evoked a great deal of study interest for their potential applications in high-density information storage, [1,2] quantum computing, [3,4] spintronics, [5][6][7][8] and spin dynamics combined with logic operation design. [9] Nevertheless, the major obstacle to develop SMM molecular devices is the low blocking temperature T B .…”

Section: Introductionmentioning

confidence: 99%

Magnetic anisotropy in 5d transition metal–porphyrin molecules*

Zhang¹,

Ge²,

Sun³

et al. 2021

Chinese Phys. B

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Single molecule magnets (SMMs) with large magnetic anisotropy energy (MAE) have great potential applications in magnetic recording. Using the first-principles calculations, we investigate the MAE of 5d transition metal–porphyrin-based SMMs by using the PBE and PBE + U with different U values, respectively. The results indicate that W–P, Re–P, Os–P, and Ir–P possess the considerably large MAE among 5d TM–P SMMs. Furthermore, the MAE of 5d TM–P can be facilely manipulated by tensile strain. The reduction of the absolute value of MAE for Ir–P molecule caused by tensile strain makes it easier to implement the writing operation. The decreasing of the occupation number of minority-spin channels of Ir-d x 2 – y 2 orbital leads the MAE to decrease when the tensile strain increases.

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Section: Introductionmentioning

confidence: 99%

Magnetic anisotropy in 5d transition metal–porphyrin molecules*

Zhang¹,

Ge²,

Sun³

et al. 2021

Chinese Phys. B

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“…As a result, D0 22 -Mn 3 Ga is highly excepted to exhibit stable coherent reversal for nanoscale spin-transfer torque memory and logic applications at the dimension less than 10 nm [27,28]. Both theoretical and experimental investigations about the exchange coupling between D0 22 -Mn 3 Ga and other materials (MgO, SrTiO 3 , Co 2 MnSi, Co 2 FeAl and Co 2 FeSi) have been explored for spintronics applications [29][30][31][32][33][34][35]. The Co and Fe elements are two typical of FM materials investigated in both fundamental science and electronic devices.…”

Section: Introductionmentioning

confidence: 99%

Interfacial magnetic coupling and orbital hybridization for D0₂₂-Mn₃Ga/Fe films

Zhang¹,

Tong²,

Wu³

et al. 2021

Phys. Scr.

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Interfacial magnetic coupling interactions between D022-Mn3Ga and ultrathin Fe films were studied using first principles calculations. Based on the calculations of surface energy and interface energy, it is demonstrated that Mn-Ga/Fe is the most stable interfacial structure. As a result, four possible coupling states between D022-Mn3Ga and Fe films may be present by considering the relative direction of magnetic moment for the interfacial and inner-layer Mn atoms. Their corresponding energies were calculated by varying the Fe atomic layer thicknesses from 1 to 6 monolayers. It is found that the antiferromagnetic coupling energy in D022-Mn3Ga/Fe films with an anti-parallel magnetic moment of the interfacial and inner-layer Mn atoms is the smallest one, regardless of the Fe layer numbers. The possible mechanism about the antiferromagnetic interactions between D022-Mn3Ga and ultrathin Fe films was analyzed by the orbital-resolved electronic density of states.

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“…Heusler alloys, first discovered by and named after Fritz Heusler in 1903 [1], are very useful for applications in information storage and spintronics as well as many other areas [2][3][4][5][6][7]. For applications in magnetics and spintronics [2], the inherently low magnetocrystalline anisotropy in cubic Heusler alloys can be limiting factor [8].…”

Section: Introductionmentioning

confidence: 99%

Tuneable structure and magnetic properties in Fe3−V Ge alloys

Mahat

Wines

et al. 2020

Journal of Alloys and Compounds

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We report a detailed experimental and theoretical study of the effects of V substitution for Fe atom on the structural, magnetic, transport, electronic and mechanical properties of an off-stoichiometric Fe 3− V Ge intermetallic alloy series (0 ≤ ≤ 1). Single phase microstructures are observed for < 0.75, whereas higher V content alloys ≥ 0.75 are multi-phased. Vanadium substitution is observed to induce a diffusionless martensitic phase transformation from a Heusler-like L2 1 structure to hexagonal DO 19 structure, as corroborated by Differential Scanning Calorimetry results. The vanadium substitution is also found to decreases the grain size, inhibiting the grain growth by pinning the grain boundary migration. All the alloys in the series are found to be soft ferromagnets at 5 K with saturation magnetic moment and Curie temperature decreasing as V concentration increases. The low temperature saturation magnetic moment is in close agreement with the expected Slater-Pauling values for the L2 1 phases, while the hexagonal samples have markedly higher values of saturation moments. First-principle calculations agree with the experimental findings and reveal that V substitution energetically favours one of the Fe sites in Fe 3 Ge. The electrical resistivity measured over the temperature range from 5 K to 400 K shows negative temperature coefficient of resistivity at high temperatures with increasing the V concentration. Relatively high mechanical hardness values are also observed, with the values increasing with increasing V content. Vanadium substitution is found to play a central role in tuning the mechanical properties, stabilising the L2 1 structure, and shifting the martensitic transformation temperature to higher values from that of parent Fe 3 Ge.

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Thickness and composition dependencies of magnetization and perpendicular magnetic anisotropy of Heusler-like alloys based MnxGa|Co2FeAl

Cited by 6 publications

References 70 publications

Magnetic anisotropy in 5d transition metal–porphyrin molecules*

Magnetic anisotropy in 5d transition metal–porphyrin molecules*

Interfacial magnetic coupling and orbital hybridization for D0₂₂-Mn₃Ga/Fe films

Tuneable structure and magnetic properties in Fe3−V Ge alloys

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Thickness and composition dependencies of magnetization and perpendicular magnetic anisotropy of Heusler-like alloys based MnxGa|Co2FeAl

Cited by 6 publications

References 70 publications

Magnetic anisotropy in 5d transition metal–porphyrin molecules*

Magnetic anisotropy in 5d transition metal–porphyrin molecules*

Interfacial magnetic coupling and orbital hybridization for D022-Mn3Ga/Fe films

Tuneable structure and magnetic properties in Fe3−V Ge alloys

Contact Info

Product

Resources

About

Interfacial magnetic coupling and orbital hybridization for D0₂₂-Mn₃Ga/Fe films