A Study on the Emergence of P-Type Behaviour in Sr-Cu-O Mixed Phase Systems

Strontium copper oxide (SCO) powder samples were prepared by hydrothermal method at 180°C. The samples were further annealed in air and vacuum. The XRD analysis showed different phases of SCO (SrCuO3, SrCu2O3, SrCu2O2, Sr2Cu2O5, Sr2Cu3O5, Sr4Cu6O10, SrCuO2, Sr2CuO3) in the synthesized samples. In th...

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Bibliographic Details
Published in:Journal of physics. Conference series 2019-03, Vol.1172 (1), p.12008
Main Authors: Mariya Thomas, Arathy, Salam, Shifa, Santhoshkumar, M C, Devasia, Sebin, Anila, E.I.
Format: Article
Language:English
Subjects:
Absorption spectra
Annealing
Copper
Copper oxides
Electrical properties
Hall effect
Strontium copper oxide
Strontium oxides
Synthesis
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Summary:Strontium copper oxide (SCO) powder samples were prepared by hydrothermal method at 180°C. The samples were further annealed in air and vacuum. The XRD analysis showed different phases of SCO (SrCuO3, SrCu2O3, SrCu2O2, Sr2Cu2O5, Sr2Cu3O5, Sr4Cu6O10, SrCuO2, Sr2CuO3) in the synthesized samples. In the FTIR spectra, strong bands of vibrations of Cu-O, C=O, C=C and C-H were found. Broad absorption in the range of 200-800 nm were noted in the absorption spectra. The electrical properties from the Hall effect measurements confirms the n-type behavior of as synthesized SCO and vacuum annealed SCO (V1). Whereas annealing the sample in air and vacuum for a smaller duration resulted in p-type behavior of SCO (A) and SCO (V2). The SEM images displayed agglomerates formed in the samples with the observed onset of some rod-like structures.
ISSN:1742-6588
1742-6596
DOI:10.1088/1742-6596/1172/1/012008