Syntheses and studies on some copper chromite spinel oxide composites

Journal Article · Sat May 01 04:00:00 EDT 1999 · Materials Research Bulletin

DOI:https://doi.org/10.1016/S0025-5408(99)00109-9· OSTI ID:20005955

Roy, S; Ghose, J

Composites of CuCr{sub 2}O{sub 4} semiconductor with the polymer poly-aryl-ether-ether-ketone were prepared. Characterization of the composite materials by X-ray diffraction (XRD), scanning electron microscopy (SEM) and infrared (IR) spectroscopy indicates that no new compound is formed during composite formation between the semiconductor and the polymer. XRD and differential scanning calorimetry (DSC) results show that crystallinity of the polymer decreased with increasing amounts of CuCr{sub 2}O{sub 4} in the composite. The results of the resistivity measurements show that the semiconducting property of CuCr{sub 2}O{sub 4} did not change upon composite formation. Calculation of mobility of the charge carriers shows that, similar to CuCr{sub 2}O{sub 4}, the mobility of the composites changed linearly with temperature. On heating, the composite changed from extrinsic to intrinsic type, and E{sub a{minus}in} increased and mobility decreased upon increasing the polymer in the composite.

• Research Organization: Indian Inst. of Tech., Kharagpur (IN)
• OSTI ID: 20005955
• Journal Information: Materials Research Bulletin, Journal Name: Materials Research Bulletin Journal Issue: 7 Vol. 34; ISSN MRBUAC; ISSN 0025-5408
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
CALORIMETRY
CHROMIUM OXIDES
COMPOSITE MATERIALS
COPPER OXIDES
ELECTRIC CONDUCTIVITY
POLYMERS
SEMICONDUCTOR MATERIALS
SYNTHESIS
X-RAY DIFFRACTION