Structural and optical properties of Zn0.8Co0.2O ceramics

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Sujinnapram S., Onreabroy W., Nantawisarakul T.

ผู้เผยแพร่: Trans Tech Publications

ปีที่เผยแพร่ (ค.ศ.): 2008

Volume number: 55-57

หน้าแรก: 337

หน้าสุดท้าย: 340

จำนวนหน้า: 4

ISBN: 9780878493562

นอก: 1022-6680

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-62949084266&partnerID=40&md5=04ca56c7a74f97808f5d01ea838b2a55

ภาษา: English-Great Britain (EN-GB)

บทคัดย่อ

The Zn0.8Co0.2O ceramics were synthesized by the solid state reaction method with the mixture of ZnO and CoO powders. The mixed powders were sintered at 1200 ฐC and 1300 ฐC for 4 hours. It was found that the X-ray diffraction patterns of Zn0.8Co0.2O ceramics were similar to that of the pure ZnO one. The crystal structure of Zn0.8Co0.8O ceramics were then determined using the Rietveld full-profile analysis method to indicate a single phase with a wurtzite-like structure. Their microstructures were examined using the scanning electron microscopy. The results showed that their grain sizes were increased with increasing both the sintering temperatures and the doping effect. Moreover, the optical absorption spectra using UV-Vis spectrometer showed that there were several extra absorption bands appearing in the Zn0.8Co 0.2O samples. This confirms that Co2+ is substituted Zn2+ in the wurtzite structure. ฉ 2008 Trans Tech Publications, Switzerland.

คำสำคัญ

Crystal structure, Rietveld analysis, Zn1-xCoxO ceramics