Electronic and magnetic properties of the double perovskite <mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML" altimg="si1.gif" overflow="scroll"><mml:mrow><mml:mi>S</mml:mi><mml:msub><mml:mrow><mml:mi>r</mml:mi></mml:mrow><mml:mrow><mml:mn>2</mml:mn></mml:mrow></mml:msub><mml:mi>C</mml:mi><mml:mi>r</mml:mi><mml:mi>W</mml:mi><mml:msub><mml:mrow><mml:mi>O</mml:mi></mml:mrow><mml:mrow><mml:mn>6</mml:mn></mml:mrow></mml:msub></mml:mrow></mml:math>: Ab-initio and Monte Carlo studies

Amraoui, S.; Feraoun, A.; Kerouad, M.

doi:10.1016/j.jpcs.2019.03.029

Cited by 17 publications

(4 citation statements)

References 24 publications

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“…along the c axis. [11] Therefore, we measured the in-plane and out-of-plane magnetization-magnetic field (M-H) curves through PPMS at 2 K and 90 K, respectively, with a magnetic field of 0 T-9 T and the results are plotted in Fig. 7.…”

Section: Thickness (Nm)mentioning

confidence: 99%

“…Band-structure calculations reveal that they are ferromagnetic half-metals with highly spin-polarized transport properties at the Fermi level. [3] The corresponding T C is ∼ 460 K. [10,11] In SCWO, there is antiferromagnetic exchange coupling between Cr and W, Cr 3+ (3d 3 , s = 3/2) is antiferromagnetically coupled to W 5+ (5d 1 , s = 1/2), giving a net spin of 2 µ B per formula unit (f.u.). [1] These spin states can be explained by the fact that, when the magnetic field H is dominant with its large positive or negative values, all spins are aligned parallel (+3/2, +1/2) or antiparallel (−3/2, −1/2) to the z direction, respectively.…”

Section: Introductionmentioning

confidence: 99%

“…[1] These spin states can be explained by the fact that, when the magnetic field H is dominant with its large positive or negative values, all spins are aligned parallel (+3/2, +1/2) or antiparallel (−3/2, −1/2) to the z direction, respectively. [11] Moreover, W is a 5d transition metal, 4d and 5d orbits have stronger ductility compared with 3d orbits, and Coulomb repulsive potential gradually weakens in 4d and 5d. Therefore, the research process has gradually moved from 3d to 4d/5d transition metal oxides.…”

Section: Introductionmentioning

confidence: 99%

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Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr₂CrWO₆/SrTiO₃ films

Yao¹,

Shao²,

Liu³

et al. 2022

Chinese Phys. B

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High-quality Sr2CrWO6 (SCWO) films have been grown on SrTiO3 (STO) substrate by pulsed laser deposition under low oxygen pressure. With decrease of the film thickness, a drastic conductivity increase is observed. The Hall measurements show that the thicker the film, the lower the carrier density. An extrinsic mechanism of charge doping due to the dominance of oxygen vacancies at SCWO/STO interfaces is proposed. The distribution and gradient of carrier concentration in SCWO films are considered to be related to this phenomenon. Resistivity behavior observed in these films is found to follow the variable range hopping model. It is revealed that with increase of the film thickness, the extent of disorder in the lattice increases, which gives a clear evidence of disorder-induced localization charge carriers in these films. Magnetoresistance measurements show that there is a negative magnetoresistance in SCWO films, which is considered to be caused by the magnetic scattering of magnetic elements Cr3+ and W5+. In addition, a sign reversal of anisotropic magnetoresistance (AMR) in SCWO film is observed for the first time, when the temperature varies across a characteristic value, T M . Magnetization-temperature measurements demonstrate that this AMR sign reversal is caused by the direction transition of easy axis of magnetization from the in-plane ferromagnetic order at T > T M to the out-of-plane at T < T M .

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Section: Thickness (Nm)mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr₂CrWO₆/SrTiO₃ films

Yao¹,

Shao²,

Liu³

et al. 2022

Chinese Phys. B

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“…27 GThe electronic and magnetic properties of double perovskite have been studied by using ab initio and Monte Carlo methods. 28,29 To the best of the authors' knowledge, all research work carried out on the NdMnO 3 system has treated it as a ferromagnetic system. 26 However, in this work, based on DFT calculations, it is found that the manganese atoms are antiferromagnetically coupled.…”

Section: Introductionmentioning

confidence: 99%

Electronic, Magnetic, and Magnetocaloric Properties of NdMnO3 Simple Perovskite

Magoussi¹,

Amraoui²,

Feraoun³

et al. 2021

Journal of Elec Materi

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Using density functional theory calculations within the generalized gradient approximation, the electronic density of states and band structure of NdMnO 3 simple perovskite are analyzed. It is found that the compound behaves as a ferromagnetic half-metal material. By using Monte Carlo simulations within the framework of the Ising model, the effects of the crystal field and the exchange interaction between the magnetic atoms Mn-Mn and Nd-Mn on the magnetization, susceptibility, specific heat, and internal energy are investigated. The magnetocaloric effect of NdMnO 3 is also examined. It is observed that the relative cooling power (RCP) increases when the applied magnetic field or Mn-Mn exchange interaction is increased, whereas the RCP decreases when the crystal field or Nd-Mn exchange interaction is increased. These results show that NdMnO 3 is a potential candidate for use in magnetic refrigeration and spintronic applications.

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First-Principle and Monte Carlo Calculations of Structural, Electronic and Magnetic Properties of the Double Perovskite Sr2TiMoO6

2020

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Electronic and magnetic properties of the double perovskite Sr2CrWO6: Ab-initio and Monte Carlo studies

Cited by 17 publications

References 24 publications

Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr₂CrWO₆/SrTiO₃ films

Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr₂CrWO₆/SrTiO₃ films

Electronic, Magnetic, and Magnetocaloric Properties of NdMnO3 Simple Perovskite

First-Principle and Monte Carlo Calculations of Structural, Electronic and Magnetic Properties of the Double Perovskite Sr2TiMoO6

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Electronic and magnetic properties of the double perovskite Sr2CrWO6: Ab-initio and Monte Carlo studies

Cited by 17 publications

References 24 publications

Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr2CrWO6/SrTiO3 films

Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr2CrWO6/SrTiO3 films

Electronic, Magnetic, and Magnetocaloric Properties of NdMnO3 Simple Perovskite

First-Principle and Monte Carlo Calculations of Structural, Electronic and Magnetic Properties of the Double Perovskite Sr2TiMoO6

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Product

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Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr₂CrWO₆/SrTiO₃ films

Sign reversal of anisotropic magnetoresistance and anomalous thickness-dependent resistivity in Sr₂CrWO₆/SrTiO₃ films