Effect of polymer matrix on the phase transitions of CuFe{sub 2}O{sub 4}

Journal Article · Thu Apr 01 00:00:00 EST 1999 · Journal of Solid State Chemistry

DOI:https://doi.org/10.1006/jssc.1999.8136· OSTI ID:349928

Roy, S; Ghose, J ^[1]

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1. Indian Inst. of Tech., Kharagpur (India). Chemistry Dept.

The effect of a polymer matrix on phase transitions in CuFe{sub 2}O{sub 4} spinel oxide has been studied. XRD results show that cubic CuFe{sub 2}O{sub 4} is obtained by quenching from 1173 K, while with CuFe{sub 2}O{sub 4}-PEEK composite samples, the cubic form is obtained by quenching from considerably lower temperatures ({approximately}733 K). The change in resistivity with temperature of the quenched composite samples shows that the cubic samples quenched from <1173 K undergo several phase changes during heating. Measurements of thermoelectric power indicate that the composite samples quenched from {le}1073 K show n-type conduction, and the sample quenched from 1173 K shows p-type conduction.

• OSTI ID: 349928
• Journal Information: Journal of Solid State Chemistry, Vol. 144, Issue 1; Other Information: PBD: Apr 1999
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CRYSTAL-PHASE TRANSFORMATIONS
COPPER OXIDES
IRON OXIDES
POLYMERS
COMPOSITE MATERIALS
QUENCHING
X-RAY DIFFRACTION
ELECTRIC CONDUCTIVITY
EXPERIMENTAL DATA