Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8

@article{Pokharel2018NegativeTE,
  title={Negative thermal expansion and magnetoelastic coupling in the breathing pyrochlore lattice material LiGaCr4S8},
  author={Ganesh Pokharel and Andrew F. May and D. S. Parker and Stuart Calder and Georg Ehlers and Ashfia Huq and Simon A J Kimber and Hasitha Suriya Arachchige and L Poudel and Michael A. McGuire and David G. Mandrus and Andrew D. Christianson},
  journal={Physical Review B},
  year={2018},
  volume={97}
}
The physical properties of the spinel LiGaCr4S8 have been studied with neutron diffraction, X-ray diffraction, magnetic susceptibility and heat capacity measurements. The neutron diffraction and synchrotron X-ray diffraction data reveal negative thermal expansion (NTE) below 111(4) K. The magnetic susceptibility deviates from Curie-Weiss behavior with the onset of NTE. At low temperature a broad peak in the magnetic susceptibility at 10.3(3) K is accompanied by the return of normal thermal… Expand

Figures and Tables from this paper

Behavior of the breathing pyrochlore lattice Ba3Yb2Zn5O11 in applied magnetic field.
TLDR
Refinement of the theoretical model previously determined at zero field can reproduce much of the inelastic neutron scattering spectra and specific heat data on the scale of interactions between tetrahedra or may reflect undetected disorder in Ba3Yb2Zn5O11. Expand
Effect of hydration and ammonization on the thermal expansion behavior of ZrW2O8 : Ab initio lattice dynamical perspective
The hydration and ammonization of ZrW2O8 is known to lead to positive and negative thermal expansion behaviour respectively. We report ab-initio calculations to understand this anomalous behaviour.Expand
Suppression of the antiferromagnetic metallic state in the pressurized MnBi2Te4 single crystal
MnBi2Te4 has attracted tremendous research interest recently as the first intrinsic antiferromagnetic (AF) topological insulator. It undergoes a long-range AF order at TN = 24 K accompanied with aExpand
Negative thermal expansion in magnetic materials
  • Yuzhu Song, Naike Shi, Shiqing Deng, Xianran Xing, Jun Chen
  • Materials Science
  • Progress in Materials Science
  • 2021
Abstract By virtue of the unique advantages of compensating and controlling thermal expansion, negative thermal expansion (NTE) materials have attracted great attention and have gained rapidExpand
Unusual magnetic properties and thermal expansion in chromium pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd
Abstract New complex Cr-containing pyrochlores Ln2CrTaO7, Ln = Y, Sm, Gd, were synthesized. The Rietveld refinement of the Ln2CrTaO7 composition confirmed the pyrochlore type of the structure. TheExpand
The effect of manganese doping on the structural, magnetic and dielectric properties of breathing pyrochlore LiInCr4-Mn O8
  • Hui Liu, Yanfei Xiong, +5 authors Gao Xianhe
  • Materials Science
  • Journal of Alloys and Compounds
  • 2022
Abstract In the present paper, polycrystalline samples of LiInCr4-xMnxO8 varying from 0.0 to 0.5 were synthesized by the solid state method. In order to explore the effect of substitution Cr by Mn inExpand
Formation of breathing pyrochlore lattices: structural, thermodynamic and crystal chemical aspects
A pyrochlore lattice is a three-dimensional network of corner-sharing tetrahedra. Crystals with a pyrochlore lattice formed from the atoms of a transition metal give rise to a rich variety ofExpand
Spin ordering induced by lattice distortions in classical Heisenberg antiferromagnets on the breathing pyrochlore lattice
We theoretically investigate effects of lattice distortions on the spin ordering of classical Heisenberg antiferromagnets on the breathing pyrochlore lattice. In the model, local lattice distortionsExpand
Ferromagnetic Cr4PtGa17: A Half-Heusler-Type Compound with a Breathing Pyrochlore Lattice.
TLDR
The new material, Cr4PtGa17, is the first realization of both a half-Heusler-type structure and a breathing pyrochlore lattice, which might pave a new way to achieve novel types of half- Heusler compounds. Expand
Breathing chromium spinels: a showcase for a variety of pyrochlore Heisenberg Hamiltonians
We address the long-standing problem of the microscopic origin of the richly diverse phenomena in the chromium breathing pyrochlore material family. Combining electronic structure and renormalizationExpand
...
1
2
3
...

References

SHOWING 1-10 OF 34 REFERENCES
Large magnetostriction and negative thermal expansion in the frustrated antiferromagnet ZnCr2Se4.
TLDR
Results point to a spin-driven origin of the structural instability at TN explained in terms of competing ferromagnetic and antiferromagnetic exchange interactions. Expand
FeCr2S4 in magnetic fields: possible evidence for a multiferroic ground state
TLDR
A linear correlation of the magnetic-field-induced change of the dielectric constant and the Magnetic-field dependent magnetization is observed, consistent with the existence of a ferroelectric polarization and a multiferroic ground state below 10 K. Expand
Magnetic phase diagram of the helimagnetic spinel compound ZnCr2Se4 revisited by small-angle neutron scattering.
TLDR
From small-angle neutron scattering measurements on the helimagnetic spinel compound ZnCr2Se4, the absence of any long-range magnetic order in the high-field (spin-nematic) phase is established and all the observed phase transitions are surprisingly isotropic with respect to the field direction. Expand
Spin-driven phonon splitting in bond-frustrated ZnCr2S4.
TLDR
The small positive Curie-Weiss temperature Theta is argued that this scenario of two different magnetic phases with different magnetoelastic couplings results from the strong competition of ferromagnetic and antiferromagnetic exchange. Expand
Colossal magnetocapacitance and colossal magnetoresistance in HgCr2S4.
TLDR
Investigations in external magnetic fields up to 5 T reveal the simultaneous occurrence of magnetocapacitance and magnetoresistance of truly colossal magnitudes in HgCr2S4. Expand
Probing spin correlations with phonons in the strongly frustrated magnet ZnCr2O4.
TLDR
It is demonstrated that the frequency of an optical phonon triplet in ZnCr2O4 tracks the nearest-neighbor spin correlations above T(c), which provides a way to measure the spin-Peierls order parameter. Expand
Negative thermal expansion and magnetostriction in the frustrated spinel ZnCr2(Se1-x S x )4 (0  ≤  x  ≤  0.1).
TLDR
Systematic investigations on the magnetization, heat capacity, thermal expansion and magnetostriction of single crystalline ZnCr2(Se1-x S x )4 to study the evolution of its spin-lattice coupling with sulfur substitution show that with increasing sulfur content, the antiferromagnetic ordering is gradually replaced by a spin-glass state. Expand
Spin and orbital frustration in MnSc2S4 and FeSc2S4.
TLDR
The Fe compound is characterized by a Curie-Weiss (CW) temperature ThetaCW = -45 K and does not show any indications of order down to 50 mK, meaning FeSc2S4 belongs to the rare class of spin-orbital liquids. Expand
Orbital freezing and orbital glass state in FeCr2S4.
TLDR
The orbital relaxation dynamics continuously slows down over six decades in time, before at the lowest temperatures the glass transition becomes suppressed by quantum tunneling and freezing of the orbital moments is revealed. Expand
Statics and dynamics of incommensurate spin order in a geometrically frustrated antiferromagnet CdCr2O4.
Using elastic and inelastic neutron scattering we show that a cubic spinel, CdCr2O4, undergoes an elongation along the c axis (c > a = b) at its spin-Peierls-like phase transition at T(N) = 7.8 K.Expand
...
1
2
3
4
...