Magnetization of two-layer ferromagnets with easy-plane and/or easy-axis single-site anisotropy

Spirin, D.V.

doi:10.1016/s0304-8853(03)00161-6

Cited by 8 publications

(7 citation statements)

References 27 publications

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“…In these two cases (easy-plane or easy-axis anisotropy), by defining the direction of z-axis parallel to the nondegenerate eigenvector, the S T i A i S i part would be simplified to A i,zz S z i 2 with only one independent component. The easy-axis anisotropy has been found to be helpful in stabilizing the long-range magnetic order and enhancing the Curie temperature in two-dimensional or quasi-two-dimensional systems [101]. The easy-plane anisotropy in three-dimensional ferromagnets can lead to the effect called "quantum spin reduction", where the mean spin at zero temperature has a value lower than the maximal one due to the quantum fluctuations [101,102].…”

Section: The J Matrices and Single-ion Anisotropymentioning

confidence: 99%

“…The easy-axis anisotropy has been found to be helpful in stabilizing the long-range magnetic order and enhancing the Curie temperature in two-dimensional or quasi-two-dimensional systems [101]. The easy-plane anisotropy in three-dimensional ferromagnets can lead to the effect called "quantum spin reduction", where the mean spin at zero temperature has a value lower than the maximal one due to the quantum fluctuations [101,102]. Recently, several materials with unusually large easyplane or easy-axis anisotropy were found [103][104][105], which, as single-ion magnets (SIMs), are promising for applications such as high-density information storage, spintronics, and quantum computing.…”

Section: The J Matrices and Single-ion Anisotropymentioning

confidence: 99%

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Spin Hamiltonians in Magnets: Theories and Computations

Liu

et al. 2021

Molecules

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The effective spin Hamiltonian method has drawn considerable attention for its power to explain and predict magnetic properties in various intriguing materials. In this review, we summarize different types of interactions between spins (hereafter, spin interactions, for short) that may be used in effective spin Hamiltonians as well as the various methods of computing the interaction parameters. A detailed discussion about the merits and possible pitfalls of each technique of computing interaction parameters is provided.

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Section: The J Matrices and Single-ion Anisotropymentioning

confidence: 99%

Section: The J Matrices and Single-ion Anisotropymentioning

confidence: 99%

Spin Hamiltonians in Magnets: Theories and Computations

Liu

et al. 2021

Molecules

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“…Magnetic bilayers have attracted considerable attention in recent literature [1][2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17]. Such systems are interesting both from experimental and theoretical point of view since they bridge the gap between the two-and three-dimensional magnets.…”

Section: Introductionmentioning

confidence: 99%

Ferrimagnetism in the Heisenberg–Ising bilayer with magnetically non-equivalent planes

Balcerzak

Szałowski

2014

Physica A: Statistical Mechanics and its Applications

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The Pair Approximation method is applied to the antiferromagnetic Heisenberg-Ising spin-1/2 bilayer with a simple cubic crystalline structure. The method allows for self-consistent calculations of thermodynamic quantities, based on the determination of Gibbs free-energy. In the paper the phase diagrams and planar magnetizations are calculated for the system in question. Special attention is paid to the case of magnetically non-equivalent planes, one of which is additionally randomly diluted. The occurrence of a compensation phenomenon is found and the compensation temperature is discussed for such a system. The characteristic concentration of magnetic atoms p , below which the compensation phenomenon vanishes, is examined as a function of the Hamiltonian parameters.

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“…The new and very interesting quantity studied here viz. S chi (ω) is defined as :- (2) where C chi (t) is the scalar spin chirality correlator. It is defined as :-…”

Section: Model and Mathematical Formulationmentioning

confidence: 99%

“…The layered triangular antiferromagnets with crystal field induced single ion uniaxial anisotropy are very important both from the viewpoint of behavior of magnetic materials as well as from the interest in spin models and universality classes in statistical mechanics 1,2 . The materials CsMnBr 2 , V Cl 2 , V Br 2 are some of the materials belonging to this class.…”

Section: Introductionmentioning

confidence: 99%

Spin dynamics of layered triangular antiferromagnets with uniaxial anisotropy

Chaudhury

2006

Journal of Magnetism and Magnetic Materials

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The spin dynamics of the semiclassical Heisenberg model with uniaxial anisotropy, on the layered triangular lattice with antiferromagnetic coupling for both intralayer nearest neighbor interaction and interlayer interaction is studied both in the ordered phase and in the paramagnetic phase, using the Monte Carlo-molecular dynamics technique. The important quantities calculated are the full dynamic structure function S(q, ω), the chiral dynamic structure function S chi (ω), the static order parameter and some thermodynamic quantities. Our results show the existence of propagating modes corresponding to both S(q, ω) and S chi (ω) in the ordered phase, supporting the recent conjectures. Our results for the static properties show the magnetic ordering in each layer to be of coplanar 3-sublattice type deviating from 120 degree structure. In the presence of magnetic trimerization however, we find the 3-sublattice structure to be weakened alongwith the tendency towards noncoplanarity of the spins.

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Magnetization of two-layer ferromagnets with easy-plane and/or easy-axis single-site anisotropy

Cited by 8 publications

References 27 publications

Spin Hamiltonians in Magnets: Theories and Computations

Spin Hamiltonians in Magnets: Theories and Computations

Ferrimagnetism in the Heisenberg–Ising bilayer with magnetically non-equivalent planes

Spin dynamics of layered triangular antiferromagnets with uniaxial anisotropy

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