Spin-dimensionality crossover in quasi 2-D antiferromagnet from EPR-linewidth measurements

Hagen, Hans; Reimann, H. G.; Schmocker, U.; Waldner, F.

doi:10.1016/0378-4363(77)90884-1

Cited by 3 publications

(4 citation statements)

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“…After linearizing equation (6) with respect to small deviations of ψ n from this configuration, we obtain for the frequency of the solution localized near the domain wall ("internal mode") the following relation…”

Section: Modelmentioning

confidence: 99%

“…In the Hamiltonian formalism, the equations of motion (6) in terms of the canonical coordinates have the form…”

Section: Integrals Of Motionmentioning

confidence: 99%

“…However, in the last few years, many new low-dimensional magnetic compounds with unique properties were synthesized producing a radical change in the problems to be studied [3]. Examples of such materials include most of the undoped hightemperature superconductors and their isostructural analogues which have a layered antiferromagnetic structure, quasi-one-dimensional magnets [(CH 3 ) 3 NH]NiCl 3 2H 2 O, (C 9 H 7 NH)NiCl 3 1.5H 2 O [4], layered intercalated easyaxis antiferromagnets as (CH 2 ) n (NH 3 ) 2 MnCl 4 , and (C n H 2n+1 NH 3 ) 2 MnCl 4 [5][6][7][8], the metalorganic layered easy-plane antiferromagnets (NH 3 ) 2 (CH 2 ) n CuCl 4 [9] and the layered metalorganic ferromagnet (CH 3 NH 3 ) 2 CuCl 4 a e-mail: meg@aquila.fisica.ufmg.br (MACC) [3,10]. In these compounds, it is possible to change the number n of organic molecules intercalating the magnetic layers which opens the possibility of experimental investigation of the dependence of the structure and of dynamic properties of such magnets on the value of the exchange integral (in comparison with the anisotropy).…”

Section: Introductionmentioning

confidence: 99%

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Topological and dynamical excitations in a classical 2D easy-axis Heisenberg model

et al. 2001

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The properties of dynamical solitons (magnon droplets) in the classical, two-dimensional anisotropic Heisenberg model with easy-axis exchange anisotropy are studied. The solution of the LandauLifshitz equation in the continuum limit for the soliton with topological charge q = 1 is obtained numerically using a shooting method. We analized a wide range of the anisotropy parameter and our results are in good agreement with results obtained from spin dynamics simulations. The dependence of an internal precession frequency of the soliton on both the anisotropy parameter and the radius of the soliton is also investigated. Finally, the limits of applicability of the continuum approach are discussed. PACS. 75.10.Hk Classical spin models -75.30.Et Exchange and superexchange interactions -75.70.Kw Domain structure (including magnetic bubbles)

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Section: Modelmentioning

confidence: 99%

“…In the Hamiltonian formalism, the equations of motion (6) in terms of the canonical coordinates have the form…”

Section: Integrals Of Motionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Topological and dynamical excitations in a classical 2D easy-axis Heisenberg model

et al. 2001

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“…ESR data have shown a very anisotropic behaviour in compounds where M = Mn [6 to 81 with an antiferromagnetic order occurring below 41 K [8]. The angular dependence of the spin-lattice relaxation time TI was investigated in the monoammonium compound (C,H,NH,),MnCl, only at room temperature.…”

Section: Introductionmentioning

confidence: 99%

Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH₃(CH₂)₄NH₃]MnCl₄

Niang

Pescia

Khechoubi

et al. 1993

Physica Status Solidi (b)

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The two-dimensional (2D) system [NH,(CH,),NH,]MnCl, is investigated by means of electron spin resonance (ESR) at X-band over the 40 to 300 K temperature range. The linewidth, the g-factor, the spin-lattice relaxation time T I , and their thermal and angular dependences are measured. The data are characteristic of a 2D compound. The angular dependence AH(0) indicates, taking also into account the presence of a half-field line, the diffusive character of the magnetization at long time. The observed thermal dependences are consistent with an antiferromagnetic order at 40 K. The experimental data are interpreted using the Bloembergen and Wang three-reservoir model since a strong exchange interaction is present.

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Spin Dynamics in the Paramagnetic Regime: NMR and EPR in Two-Dimensional Magnets

Benner

Boucher

1990

Magnetic Properties of Layered Transition Metal Compounds

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Spin-dimensionality crossover in quasi 2-D antiferromagnet from EPR-linewidth measurements

Cited by 3 publications

References 6 publications

Topological and dynamical excitations in a classical 2D easy-axis Heisenberg model

Topological and dynamical excitations in a classical 2D easy-axis Heisenberg model

Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH₃(CH₂)₄NH₃]MnCl₄

Spin Dynamics in the Paramagnetic Regime: NMR and EPR in Two-Dimensional Magnets

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Spin-dimensionality crossover in quasi 2-D antiferromagnet from EPR-linewidth measurements

Cited by 3 publications

References 6 publications

Topological and dynamical excitations in a classical 2D easy-axis Heisenberg model

Topological and dynamical excitations in a classical 2D easy-axis Heisenberg model

Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH3(CH2)4NH3]MnCl4

Spin Dynamics in the Paramagnetic Regime: NMR and EPR in Two-Dimensional Magnets

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Eletron‐Spin Dynamics in the Two‐Dimensional Compound [NH₃(CH₂)₄NH₃]MnCl₄