Hydrothermal Synthesis of Zn1-x CoxO Room Temperature DMS

Wen Li Zheng; Wei Yang

doi:10.4028/www.scientific.net/AMR.884-885.296

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 884-885Hydrothermal Synthesis of Zn1-x CoxO Room...

Hydrothermal Synthesis of Zn_1-x Co_xO Room Temperature DMS

Abstract:

Zn_1-xCo_xO crystals were synthesized by hydrothermal method with 3mol/L KOH as mineralizer. The fill factor was 35%, reaction temperature, 430°C and reaction time, 24 hours. When the Zn ( OH )₂doped with CoCl₂ 6H₂O was used as precursor, many different shapes of Zn_1-x Co_xO crystals were obtained in the hydrothermal synthesis products. The Co concentration in the crystal was determined by electron probe, the atomic percentage of Co in the crystal increased as the concentration o f CoCl₂ 6H₂O in precursor increased. The measurement of magnetism was carried out by using a superconducting quantum interference device ( SQU ID ). It is found that the magnetization varies unobviously as the temperature rises below the room temperature. The hysteresis loop of Zn_1-xCo_xO crystals was obtained at 300K and shows the ferromagnetism at the room temperature.

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Periodical:

Advanced Materials Research (Volumes 884-885)

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296-299

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.884-885.296

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Online since:

January 2014

Authors:

Wen Li Zheng, Wei Yang

Keywords:

Crystal, Diluted Magnetic Semiconductor, Hydrothermal Synthesis, Mineralizer, ZNO

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