Equation of state and high-pressure irreversible amorphization in Y3Fe5O12

Gavriliuk, Alexander; Struzhkin, Viktor V.; Lyubutin, I. S.; Eremets, M. I.; Trojan, Ivan; Артемов, В. В.

doi:10.1134/s0021364006010097

Cited by 23 publications

(29 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…29 The trends observed in this plot and the agreement with the expectations for B = 200 GPa supports the validity and accuracy of our calculations for v m . The values of γ from these fittings range between ≈1.3 and 2 for garnets, rock-salt MgO, rutile TiO 2 , and other low-density non-perovskite materials (open triangles in Figure 3(c)).…”

supporting

confidence: 73%

Analysis of the temperature dependence of the thermal conductivity of insulating single crystal oxides

et al. 2016

View full text Add to dashboard Cite

supporting

confidence: 73%

Analysis of the temperature dependence of the thermal conductivity of insulating single crystal oxides

et al. 2016

View full text Add to dashboard Cite

“…7,8 It has been reported that Gd 3 Sc 2 Ga 3 O 12 (GSGG), Gd 3 Ga 5 O 12 (GGG), and Y 3 Fe 5 O 12 (YIG) transform to an amorphous state at 58 GPa, 84 GPa, and 50 GPa, 7,8 respectively. The PIA transition in the REE garnets is shown to be irreversible.…”

Section: Introductionmentioning

confidence: 99%

“…It seems that the kinetic hindrance of the equilibrium phase transitions leads to the amorphization of the REE garnets under high pressures. Additionally, Gavriliuk et al 8 pressure-induced amorphous YIG consists of the FeO 6 octahedral complexes with an overall Y 3 Fe 5 O 12 formula from the x-ray diffraction patterns, further ruling out the probability of decomposition.…”

Section: Introductionmentioning

confidence: 99%

Pressure-induced structural evolution and amorphization in Eu3Ga5O12

Lin

et al. 2013

Journal of Applied Physics

View full text Add to dashboard Cite

Crystal structural evolution of europium gallium garnet (Eu3Ga5O12; EGG) has been investigated by a combination of synchrotron x-ray diffraction, Raman scattering, and photoluminescence spectroscopy in a high-pressure diamond anvil cell. The cubic garnet EGG mostly collapses into an amorphous state upon compression to 85 GPa at room temperature. High-pressure Raman and photoluminescence spectra indicate that the amorphization process is related to the interaction and deformation of the tetrahedra GaO4 and octahedra GaO6 under compression, leading to the increase of the asymmetry of the local oxygen environment around the Eu3+ site with increasing pressures. The amorphization of EGG is associated with the overlapping of the tetrahedra and octahedra and the increase of the average coordination numbers of the Ga3+ ions in the amorphous state. X-ray diffraction spectra of EGG taken from a laser-heated diamond anvil cell demonstrate that the pressure-induced garnet-to-amorphous transition could result from the kinetic hindrance of a crystal-to-crystal phase transition at room temperature, rather than the decomposition reported earlier.

show abstract

“…HP XRS allows direct probing of the chemical bonding changes of light elements in noncrystalline materials [267,382]. Relatively speaking, HP XRD remains a primary technique for studying the structural evolution of non-crystalline materials [97,120,198,204,262,264,[383][384][385][386][387][388][389], pressure-induced amorphization or melting [346,[390][391][392][393][394][395][396][397][398][399], and pressure-induced crystallization [58,346,393,397,[400][401][402].…”

Section: Non-crystalline Materialsmentioning

confidence: 99%

High-pressure studies with x-rays using diamond anvil cells

2016

View full text Add to dashboard Cite

Pressure profoundly alters all states of matter. The symbiotic development of ultrahighpressure diamond anvil cells, to compress samples to sustainable multi-megabar pressures; and synchrotron x-ray techniques, to probe materials' properties in situ, has enabled the exploration of rich high-pressure (HP) science. In this article, we first introduce the essential concept of diamond anvil cell technology, together with recent developments and its integration with other extreme environments. We then provide an overview of the latest developments in HP synchrotron techniques, their applications, and current problems, followed by a discussion of HP scientific studies using x-rays in the key multidisciplinary fields. These HP studies include: HP x-ray emission spectroscopy, which provides information on the filled electronic states of HP samples; HP x-ray Raman spectroscopy, which probes the HP chemical bonding changes of light elements; HP electronic inelastic x-ray scattering spectroscopy, which accesses high energy electronic phenomena, including electronic band structure, Fermi surface, excitons, plasmons, and their dispersions; HP resonant inelastic x-ray scattering spectroscopy, which probes shallow core excitations, multiplet structures, and spin-resolved electronic structure; HP nuclear resonant x-ray spectroscopy, which provides phonon densities of state and time-resolved Mössbauer information; HP x-ray imaging, which provides information on hierarchical structures, dynamic processes, and internal strains; HP x-ray diffraction, which determines the fundamental structures and densities of single-crystal, polycrystalline, nanocrystalline, and non-crystalline materials; and HP radial x-ray diffraction, which yields deviatoric, elastic and rheological information. Integrating these tools with hydrostatic or uniaxial pressure media, laser and resistive heating, and cryogenic cooling, has enabled investigations of the structural, vibrational, electronic, and magnetic properties of materials over a wide range of pressure-temperature conditions.

show abstract

Equation of state and high-pressure irreversible amorphization in Y3Fe5O12

Cited by 23 publications

References 13 publications

Analysis of the temperature dependence of the thermal conductivity of insulating single crystal oxides

Analysis of the temperature dependence of the thermal conductivity of insulating single crystal oxides

Pressure-induced structural evolution and amorphization in Eu3Ga5O12

High-pressure studies with x-rays using diamond anvil cells

Contact Info

Product

Resources

About