TY - JOUR
T1 - Pressure-Induced Transition from a Charge-Disproportionated Antiferromagnetic State to a Charge-Uniform Ferromagnetic State in [Formula presented]
AU - Kawakami, T.
AU - Nasu, S.
AU - Sasaki, T.
AU - Kuzushita, K.
AU - Morimoto, S.
AU - Endo, S.
AU - Yamada, T.
AU - Kawasaki, S.
AU - Takano, M.
PY - 2002
Y1 - 2002
N2 - The perovskite oxide [Formula presented] has been found to switch its electronic ground state drastically at 23 GPa through measurements of [Formula presented] Mössbauer spectroscopy and powder x-ray diffraction up to 56 GPa. In the low-pressure region a first-order transition from a charge-uniform paramagnetic metallic phase to a charge-disproportionated [Formula presented] antiferromagnetic insulating phase occurs at 207 K at 0.1 MPa and 165 K at 21 GPa, typically. Above 25 GPa, however, a charge-uniform ferromagnetic (and most probably metallic) phase persists below 300 K. This switching occurs at a lattice volume of [Formula presented].
AB - The perovskite oxide [Formula presented] has been found to switch its electronic ground state drastically at 23 GPa through measurements of [Formula presented] Mössbauer spectroscopy and powder x-ray diffraction up to 56 GPa. In the low-pressure region a first-order transition from a charge-uniform paramagnetic metallic phase to a charge-disproportionated [Formula presented] antiferromagnetic insulating phase occurs at 207 K at 0.1 MPa and 165 K at 21 GPa, typically. Above 25 GPa, however, a charge-uniform ferromagnetic (and most probably metallic) phase persists below 300 K. This switching occurs at a lattice volume of [Formula presented].
UR - http://www.scopus.com/inward/record.url?scp=85038269284&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85038269284&partnerID=8YFLogxK
U2 - 10.1103/PhysRevLett.88.037602
DO - 10.1103/PhysRevLett.88.037602
M3 - Article
AN - SCOPUS:85038269284
SN - 0031-9007
VL - 88
SP - 4
JO - Physical Review Letters
JF - Physical Review Letters
IS - 3
ER -