TY - JOUR
KW - Film
KW - Temperature measurement
KW - Manganese
KW - Impedance
KW - Article
KW - Dielectric constant
KW - Calcium ion
KW - Lanthanide
KW - Oxygen derivative
KW - Chemical binding
KW - Equilibrium constant
AU - L.V Saraf
AU - S.B Ogale
AU - Z Chen
AU - R.P Godfrey
AU - T Venkatesan
AU - Ramamoorthy Ramesh
AB - Frequency-dependent capacitance measurements and transport measurements tuned to reveal system impedance have been performed on epitaxial thin films of Pr0.67Ca0.33MnO3. These reflect strong dielectric response features correlated to the various ordering transition temperatures in the system, namely, ∼220 K (charge ordering), ∼130 K (antiferromagnetic ordering), and ∼117 K (spin canting). An equally strong feature is also seen at ∼125 K, which does not correspond to any reported transition. The enhanced dielectric response at the transitions is attributed to the nonequilibrium transport and slow carrier reorganization dynamics defined by polaronic hopping and magnetic frustration.
BT - Physical Review B - Condensed Matter and Materials Physics
DO - 10.1103/PhysRevB.62.R11961
LA - eng
M1 - 18
N1 - cited By 8
N2 - Frequency-dependent capacitance measurements and transport measurements tuned to reveal system impedance have been performed on epitaxial thin films of Pr0.67Ca0.33MnO3. These reflect strong dielectric response features correlated to the various ordering transition temperatures in the system, namely, ∼220 K (charge ordering), ∼130 K (antiferromagnetic ordering), and ∼117 K (spin canting). An equally strong feature is also seen at ∼125 K, which does not correspond to any reported transition. The enhanced dielectric response at the transitions is attributed to the nonequilibrium transport and slow carrier reorganization dynamics defined by polaronic hopping and magnetic frustration.
PY - 2000
SP - R11961
EP - R11964
T2 - Physical Review B - Condensed Matter and Materials Physics
TI - Correlation of large dielectric response with the ordering transitions in PR0.67Ca0.33MnO3
VL - 62
SN - 01631829
ER -