Characteristic features of the magnetic ordering of Dy3+ ions in a monoclinic RbDy(WO4)2 single crystal

V. P. D'yakonov; V. I. Markovich; V. L. Kovarskiǐ; A. V. Markovich; M. Borowiec; A. Jendrzejczak; H. Szymczak

doi:10.1134/1.1130798

Characteristic features of the magnetic ordering of Dy³⁺ ions in a monoclinic RbDy(WO₄)₂ single crystal

V. P. D'yakonov, V. I. Markovich, V. L. Kovarskiǐ, A. V. Markovich, M. Borowiec, A. Jendrzejczak, H. Szymczak

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Abstract

The investigation of the specific heat of a RbDy(WO₄)₂ single crystal at temperatures 0.2-2.5 K and in magnetic fields up to 2 Τ are reported. The temperature dependence of the specific heat near Τ_Ν=0.818 K is compared with the predictions for different models. The 2D Ising model describes satisfactorily C(Τ) below Τ_Ν, while for Tau;>Τ_Ν none of the theoretical models agree with the behavior of C(Τ) of RbDy(WO₄)₂. The Η-Τ phase diagram for H∥c is complicated and possesses a triple point, where regions of existence of three magnetic phases converge. The magnetic ordering is analyzed from the standpoint of the Jahn-Teller nature of the structural phase transitions occurring in RbDy(WO₄)₂ at higher temperatures. It is shown that the form of the phase diagram depends on the direction of the vector H, for the general case of an arbitrary direction of H, two phase transitions can occur with increasing field.

Original language	English
Pages (from-to)	440-444
Number of pages	5
Journal	Physics of the Solid State
Volume	41
Issue number	3
DOIs	https://doi.org/10.1134/1.1130798
State	Published - 1 Jan 1999
Externally published	Yes

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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title = "Characteristic features of the magnetic ordering of Dy3+ ions in a monoclinic RbDy(WO4)2 single crystal",

abstract = "The investigation of the specific heat of a RbDy(WO4)2 single crystal at temperatures 0.2-2.5 K and in magnetic fields up to 2 Τ are reported. The temperature dependence of the specific heat near ΤΝ=0.818 K is compared with the predictions for different models. The 2D Ising model describes satisfactorily C(Τ) below ΤΝ, while for Tau;>ΤΝ none of the theoretical models agree with the behavior of C(Τ) of RbDy(WO4)2. The Η-Τ phase diagram for H∥c is complicated and possesses a triple point, where regions of existence of three magnetic phases converge. The magnetic ordering is analyzed from the standpoint of the Jahn-Teller nature of the structural phase transitions occurring in RbDy(WO4)2 at higher temperatures. It is shown that the form of the phase diagram depends on the direction of the vector H, for the general case of an arbitrary direction of H, two phase transitions can occur with increasing field.",

author = "D'yakonov, {V. P.} and Markovich, {V. I.} and Kovarskiǐ, {V. L.} and Markovich, {A. V.} and M. Borowiec and A. Jendrzejczak and H. Szymczak",

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AU - D'yakonov, V. P.

AU - Markovich, V. I.

AU - Kovarskiǐ, V. L.

AU - Markovich, A. V.

AU - Borowiec, M.

AU - Jendrzejczak, A.

AU - Szymczak, H.

PY - 1999/1/1

Y1 - 1999/1/1

N2 - The investigation of the specific heat of a RbDy(WO4)2 single crystal at temperatures 0.2-2.5 K and in magnetic fields up to 2 Τ are reported. The temperature dependence of the specific heat near ΤΝ=0.818 K is compared with the predictions for different models. The 2D Ising model describes satisfactorily C(Τ) below ΤΝ, while for Tau;>ΤΝ none of the theoretical models agree with the behavior of C(Τ) of RbDy(WO4)2. The Η-Τ phase diagram for H∥c is complicated and possesses a triple point, where regions of existence of three magnetic phases converge. The magnetic ordering is analyzed from the standpoint of the Jahn-Teller nature of the structural phase transitions occurring in RbDy(WO4)2 at higher temperatures. It is shown that the form of the phase diagram depends on the direction of the vector H, for the general case of an arbitrary direction of H, two phase transitions can occur with increasing field.

AB - The investigation of the specific heat of a RbDy(WO4)2 single crystal at temperatures 0.2-2.5 K and in magnetic fields up to 2 Τ are reported. The temperature dependence of the specific heat near ΤΝ=0.818 K is compared with the predictions for different models. The 2D Ising model describes satisfactorily C(Τ) below ΤΝ, while for Tau;>ΤΝ none of the theoretical models agree with the behavior of C(Τ) of RbDy(WO4)2. The Η-Τ phase diagram for H∥c is complicated and possesses a triple point, where regions of existence of three magnetic phases converge. The magnetic ordering is analyzed from the standpoint of the Jahn-Teller nature of the structural phase transitions occurring in RbDy(WO4)2 at higher temperatures. It is shown that the form of the phase diagram depends on the direction of the vector H, for the general case of an arbitrary direction of H, two phase transitions can occur with increasing field.

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JO - Physics of the Solid State

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Characteristic features of the magnetic ordering of Dy³⁺ ions in a monoclinic RbDy(WO₄)₂ single crystal

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