Research on phase transformations in 3d-metal oxides at high and ultrahigh pressure: State of the art

IS Lyubutin, AG Gavriliuk - Physics-Uspekhi, 2009 - iopscience.iop.org
In magnetic systems with strong electron correlations, the theory predicts the existence of a
pressure-induced insulator–metal phase transition accompanied by a collapse of the …

Weak Antiferromagnet Iron Borate FeBO3. Classical Object for Magnetism and the State of the Art

SG Ovchinnikov, VV Rudenko, NV Kazak… - Journal of Experimental …, 2020 - Springer
The simple lattice and magnetic structure, the high Néel temperature, the narrow
antiferromagnetic resonance line of FeBO 3, and the narrow electron paramagnetic …

Development of an energy-domain 57Fe-Mössbauer spectrometer using synchrotron radiation and its application to ultrahigh-pressure studies with a diamond anvil …

T Mitsui, N Hirao, Y Ohishi, R Masuda… - Journal of …, 2009 - journals.iucr.org
An energy-domain 57Fe-Mössbauer spectrometer using synchrotron radiation (SR) with a
diamond anvil cell (DAC) has been developed for ultrahigh-pressure measurements. The …

Phase transition with suppression of magnetism in BiFeO3 at high pressure

AG Gavriliuk, VV Struzhkin, IS Lyubutin, MY Hu… - Journal of Experimental …, 2005 - Springer
The magnetic behavior of a Bi 57 FeO 3 powdered sample was studied at high pressures by
the method of nuclear forward scattering (NFS) of synchrotron radiation. The NFS spectra …

Orthogonal magnetic structures of Fe 4 O 5: representation analysis and DFT calculations

VS Zhandun, NV Kazak, I Kupenko, DM Vasiukov… - Dalton …, 2024 - pubs.rsc.org
The magnetic and electronic structures of Fe4O5 have been investigated at ambient and
high pressures via a combination of representation analysis, density functional theory (DFT+ …

Electronic and structural transitions in NdFeO3 orthoferrite under high pressures

AG Gavriliuk, IA Troyan, R Boehler, MI Eremets… - Journal of Experimental …, 2003 - Springer
The effect of high pressure up to 65 GPa on the crystal structure and optical absorption
spectra of NdFeO 3 orthoferrite single crystals is studied in diamond anvil cells. At P∼ 37.5 …

Effect of spin crossovers on the Mott-Hubbard transition at high pressures

SG Ovchinnikov - Journal of Experimental and Theoretical Physics, 2008 - Springer
The effect of spin crossovers in dn terms on the effective Hubbard parameter (U eff)
determining the gap between the lower and upper Hubbard bands is analyzed using a many …

Nuclear resonant X-ray spectroscopy of (Mg, Fe) SiO3 orthoenstatites

JM Jackson, EA Hamecher… - European Journal of …, 2009 - pubs.geoscienceworld.org
We present nuclear resonant inelastic X-ray scattering (NRIXS) and synchrotron
Mössbauer spectroscopy (SMS) measurements, both nuclear resonant X-ray …

Structural and electronic transitions in gadolinium iron borate GdFe3(BO3)4 at high pressures

AG Gavriliuk, SA Kharlamova, IS Lyubutin… - Journal of Experimental …, 2004 - Springer
The optical properties and structure of gadolinium iron borate GdFe 3 (BO 3) 4 crystals are
studied at high pressures produced in diamond-anvil cells. X-ray diffraction data obtained at …

The mechanism of suppression of strong electron correlations in FeBO3 at high pressures

AG Gavriliuk, IA Trojan, SG Ovchinnikov… - Journal of Experimental …, 2004 - Springer
The optical absorption spectra of iron borate (FeBO 3) are measured at high pressures up to
P= 82 GPa. A mechanism of suppression of strong electron correlations is proposed within …