Phase transitions in crystals with competitive Jahn-Teller subsystems

Ivliev, M. P.; Mukovnin, A. A.; Sakhnenko, V. P.; Таланов, В. М.

doi:10.1134/s1063783414100163

Cited by 3 publications

(2 citation statements)

References 28 publications

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“…In this case crystal lowers its macroscopic symmetry. The thermodynamic path in the phase diagram of the low-symmetry phase in highlydependent on the ratio of the interaction parameters of local Jahn-Teller distortion and can be significantly different for different crystals [33]. The different macroscopic distortion correspond to each thermodynamic path of reducing the symmetry of the crystal.…”

Section: It Is Convenient To Classify the Phase Transitions Inmentioning

confidence: 99%

High pressure x-ray diffraction study of nickel–copper chromites solid solutions

Mikheykin

Torgashev

Таланов

et al. 2014

J. Phys.: Condens. Matter

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A high-pressure synchrotron radiation diffraction study has been carried out on Ni(1-x)Cu(x)Cr(2)O(4) solid solutions. Observed pressure-controlled phase transitions, along with data previously collected for temperature-induced phase transitions, are analyzed in the framework of the unified phenomenological model that results in mapping of the generic phase diagram for the whole family of Ni(1-x)Cu(x)Cr(2)O(4) solid solutions.

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Section: It Is Convenient To Classify the Phase Transitions Inmentioning

confidence: 99%

High pressure x-ray diffraction study of nickel–copper chromites solid solutions

Mikheykin

Torgashev

Таланов

et al. 2014

J. Phys.: Condens. Matter

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“…We will relate all these T * 's, T c , and T L to different stages of the freezing of the random local tetragonal distortions, on cooling, and this is why we will call this phase as quadrupole glass (see also studies of other quadrupole glasses in Refs. [26,[44][45][46][47]. This phase differs from the mixed ferroglass phase by the fact that the local dipoles are still dynamic, but being compared with the spherical glass, they are now strongly cooperative, not only in the magnitude but also in the direction.…”

Section: Introductionmentioning

confidence: 99%

Condensation of the atomic relaxation vibrations in lead-magnesium-niobate at $T=T^*$

Prosandeev,

Raevski,

Malitskaya

et al. 2013

Preprint

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We present neutron diffraction, dielectric permittivity and photoconductivity measurements, evidencing that lead-magnesium niobate experiences a diffuse phase transformation between the spherical glass and quadrupole glass phases, in the temperature interval between 400 K and 500 K, with the quadrupole phase possessing extremely high magnitudes of dielectric permittivity. Our analysis shows that the integral diffuse scattering intensity may serve as an order parameter for this transformation. Our experimental dielectric permittivity data support this choice. These data are important for the aplications desiring giant dielectric responses, in a wide temperature intervals and not related to electron's excitations.

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Coexisting antiferromagnetic phases on the frustrated pyrochlore sublattice of the mixed Jahn-Teller system Ni1−xCuxCr2O4

Reehuis,

Tovar,

Klemke

et al. 2024

Phys. Rev. Materials

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Phase transitions in crystals with competitive Jahn-Teller subsystems

Cited by 3 publications

References 28 publications

High pressure x-ray diffraction study of nickel–copper chromites solid solutions

High pressure x-ray diffraction study of nickel–copper chromites solid solutions

Condensation of the atomic relaxation vibrations in lead-magnesium-niobate at $T=T^*$

Coexisting antiferromagnetic phases on the frustrated pyrochlore sublattice of the mixed Jahn-Teller system Ni1−xCuxCr2O4

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