Strong correlation between induced ferromagnetism and oxygen deficiency in hydrothermally synthesized Cu-doped TiO2 nanorods

Sandeep K. S. Patel; N. S. Gajbhiye

doi:10.1117/12.929816

9 October 2012 Strong correlation between induced ferromagnetism and oxygen deficiency in hydrothermally synthesized Cu-doped TiO2 nanorods

Sandeep K. S. Patel, N. S. Gajbhiye

Author Affiliations +

Proceedings Volume 8461, Spintronics V; 84611T (2012) https://doi.org/10.1117/12.929816
Event: SPIE NanoScience + Engineering, 2012, San Diego, California, United States

Abstract

_{Cu-doped TiO2 anatase nanorods are obtained by annealing the hydrothermally synthesized Cu-doped titanate nanotubes precursor at temperatures 500 °C in different atmosphere (oxygen, air and argon). TEM image of the nanorods confirmed that the nanorods are randomly oriented with an average length of 100 nm and a mean diameter of 15–25 nm. X-ray diffraction ruled out the formation of either metallic Cu or copper oxide cluster and confirmed the intrinsic ferromagnetic nature. The photoluminescence (PL) spectrum analysis revealed that the ferromagnetism is due to the defects. The ferromagnetic order of Cu-doped TiO₂ anatase nanorods is found to be greater in argon atmosphere than air. In the case of oxygen annealed sample least ferromagnetic ordering is found due to quenching of oxygen vacancies defects. The observed sequence of reduction in ferromagnetism shows a close inter-relationship with the behavior of oxygen
vacancies..}

Citation Download Citation

Sandeep K. S. Patel and N. S. Gajbhiye "Strong correlation between induced ferromagnetism and oxygen deficiency in hydrothermally synthesized Cu-doped TiO2 nanorods", Proc. SPIE 8461, Spintronics V, 84611T (9 October 2012); https://doi.org/10.1117/12.929816

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