TY - JOUR
T1 - Effect of very high pressure on the magnetic state of transition metal compounds
AU - Pasternak, Moshe P.
AU - Rozenberg, Gregory K.H.
AU - Xu, Weiming M.
AU - Taylor, R. Dean
N1 - Funding Information:
This work was partially supported by grants from the Israel Science Foundation.
PY - 2004/3
Y1 - 2004/3
N2 - By simultaneously combining the methods of X-ray diffraction for structural phase transitions and EOS measurements, 57Fe Mössbauer spectroscopy as a site-sensitive probe, and resistivity measurements for studying insulating-metal transitions, we are able to study the effect of extreme pressures and at varying temperature on magnetic and electronic properties of transition metal compounds. Studies are carried out with specially tailored diamond anvils and diamond anvil cells, reaching pressures beyond 100 GPa. From our studies, we can investigate the most basic phenomenon of the quantum effect of magnetism in insulating antiferromagnets, the Mott insulators, such as high to low spin crossovers, quenching of the magnetic moments' orbital term, and the collapse of the Mott-Hubbard state. Examples of these phenomena will be given in cases of ferrous and ferric oxides, ferrous-halides and the rare-earth iron perovskites.
AB - By simultaneously combining the methods of X-ray diffraction for structural phase transitions and EOS measurements, 57Fe Mössbauer spectroscopy as a site-sensitive probe, and resistivity measurements for studying insulating-metal transitions, we are able to study the effect of extreme pressures and at varying temperature on magnetic and electronic properties of transition metal compounds. Studies are carried out with specially tailored diamond anvils and diamond anvil cells, reaching pressures beyond 100 GPa. From our studies, we can investigate the most basic phenomenon of the quantum effect of magnetism in insulating antiferromagnets, the Mott insulators, such as high to low spin crossovers, quenching of the magnetic moments' orbital term, and the collapse of the Mott-Hubbard state. Examples of these phenomena will be given in cases of ferrous and ferric oxides, ferrous-halides and the rare-earth iron perovskites.
KW - Correlated-system
KW - High-pressure
KW - Hyperfine-interaction
KW - Magnetism
KW - Phase-transition
KW - Transition-metal compound
UR - http://www.scopus.com/inward/record.url?scp=4644362520&partnerID=8YFLogxK
U2 - 10.1080/08957950310001635783
DO - 10.1080/08957950310001635783
M3 - מאמר
AN - SCOPUS:4644362520
VL - 24
SP - 33
EP - 43
JO - High Pressure Research
JF - High Pressure Research
SN - 0895-7959
IS - 1
ER -