The magnetic properties of potassium holmium double tungstate

Borowiec, M.T.; Dyakonov, V. P.; Khatsko, E. N.; Zayarnyuk, T.; Zubov, E.; Szewczyk, A.; Gutowska, M.; Rykova, A. I.; Pietosa, J.; Majchrowski, A.; Michalski, E.; Hoffmann, J.-U.; Prokeš, K.; Woźniak, Krzysztof; Barański, Marek; Domukhovski, V.; Shtyrkhunova, V.; Żmija, Józef; Szymczak, H.

doi:10.1063/1.3654127

Cited by 4 publications

(3 citation statements)

References 15 publications

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“…It should be noted that the magnetic properties as well as the crystalline structure of the KHo(WO 4 ) 2 crystal have not been studied yet [18,19] except for the short communication [20]. In singlet magnets, an unusual magnetic behaviour is expected and it is difficult to predict the emerging and character of magnetic ordering.…”

Section: Introductionmentioning

confidence: 96%

The specific heat of potassium holmium double tungstate

et al. 2011

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The results of measurements of thermal properties (specific heat) of potassium holmium double tungstate KHo(WO 4 ) 2 as a function of temperature (from 0.5 to 300 K) and magnetic field (up to 2 T) are presented. The total specific heat without the phonon and Schottky contributions is found to have the anomaly with maximum at T SPT $ 5 K. This anomaly is likely related with the structural phase transition (SPT) caused by the cooperative Jahn-Teller effect. The increase of specific heat at very low temperatures and its shift towards high temperatures with increasing magnetic field are observed. The origin of this behaviour can be connected with possible magnetic phase transition induced by magnetic field.

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Section: Introductionmentioning

confidence: 96%

The specific heat of potassium holmium double tungstate

et al. 2011

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“…This family compounds have been actively studied for a long time and can be used to understand and describe quantum transitions, spins liquid, transitions induced by strong anisotropy, among others. Transitions at very low temperatures can happen in low dimensional systems, especially when we consider the quantum fluctuations inherent to the physical quantities involved and which can only be treated by suitable models, such as the quantum Heisenberg model, Ising the transverse field and others [1][2][3][4][5][6][7] Studies about crystalline structure of KTb(WO 4 ) 2 have shown symmetry monoclinic, with space group C2/c with a chain structure. There are 4 formula units per elementary cell with lattice parameters: a = 10.653 Å, b = 10.402 Å, c = 7.573 Åand β= 130.76 • .…”

Section: Introductionmentioning

confidence: 99%

Quantum anisotropic antiferromagnetic Heisenberg model for description of magnetic properties at low temperatures from KTb(WO4)2

Freitas

Silva

2023

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Low dimensional magnetic systems have attracted the attention of several researchers in recentdecades, mainly because from exotic magnetic properties and the superconductivity that, in someof these systems, occur as result from characteristics of such materials. One of these materialsis KTb(WO4)2, generally considered a prototype from 2D Ising model, but which presents somepeculiarities on the magnetization diagram at low temperatures, especially the non-linear dependenceof magnetization with the applied magnetic field, behavior that cannot be described via puretwo-dimensional Ising model. The system presents structural and metamagnetic phase transition atlow temperatures, and we believe that such behavior may be related quantum effects and despitepresenting high anisotropy, this material it would not be a perfect prototype of the Ising model intwo dimensions. In this work, we present a proposal for using the anisotropic quantum Heisenbergmodel for describing the magnetic properties of the KTb(WO4)2 quasi-doublet with the objective,mainly, to describe non-linear properties at low temperatures. To achieve our goal, we simulatedthe magnetic properties of the material considering several anisotropy values via Quantum MonteCarlo (QMC) and compared the results with experimental data available already published. Tocomparison, we obtained diagrams of magnetization versus field and susceptibility dependence oftemperature (low temperature regime). Our results show excellent agreement with the experimentaldata, especially at low temperatures and for intermediate values from magnetic anisotropy.

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“…Many of them show complicated structural phase transitions (SPT), caused by the cooperative Jahn-Teller effect (CJTE), and magnetic phase transitions. Unlike the high symmetry crystals, they are characterized by strong magnetic anisotropy, low local symmetry and low-dimensional magnetic structure, and they exhibit strong spin-lattice coupling [1,[8][9][10]. The rubidium neodymium double tungstate was also studied, especially its structural and spectroscopic properties [1][2][3].…”

Section: Introductionmentioning

confidence: 99%