Formation of nanocrystals and amorphous Al2O3 film grown by reactive magnetron sputtering

บทความในวารสาร


ผู้เขียน/บรรณาธิการ


กลุ่มสาขาการวิจัยเชิงกลยุทธ์

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รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่งUdomkana N., Limsuwan P.

ผู้เผยแพร่World Scientific Publishing

ปีที่เผยแพร่ (ค.ศ.)2008

วารสารInternational Journal of Modern Physics B: Condensed Matter Physics; Statistical Physics; Atomic, Molecular and Optical Physics (0217-9792)

Volume number22

Issue number24

หน้าแรก4217

หน้าสุดท้าย4224

จำนวนหน้า8

นอก0217-9792

eISSN1793-6578

URLhttps://www.scopus.com/inward/record.uri?eid=2-s2.0-54349120288&doi=10.1142%2fS0217979208048978&partnerID=40&md5=0e8d51f0dd22517760d832bf0e63d7ce

ภาษาEnglish-Great Britain (EN-GB)


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บทคัดย่อ

Al2O3 films were deposited by reactive magnetron sputtering. As measured with Raman spectroscopy, the atomic force microscopy (AFM), nanohardness and spectrophotometer, respectively. Raman microscopy was then employed to follow their characteristics of optical and acoustic phonon modes. At the optimal sputtering time of 30 minutes, defect-induced first and second order Raman spectra were observed in the 100-900 cm-1 band, which was related to coating composition. However, at the thickness at 250, 300, 450 and 500 nm crystals of the order of nano size of α- Al 2O3 phase were achieved, which could be clearly identified by the presence of Raman peaks at 388, 417 cm-1 and 521 cm -1 assigned to Si substrate. The average nano grain size is measured by atomic force microscopy (AFM). It was found that the hardness was strongly dependent on the roughness of the films, the maximum of which was achieved at 20.01 GPa. The optical band gap of Al2O3 films was found to be in the range of 5.55 eV. All these results were analyzed and presented as a function of the deposition parameters and composition, and crystalline phases excited in the films. © 2008 World Scientific Publishing Company.


คำสำคัญ

Al2O3filmsNanohardnessRaman spectrum


อัพเดทล่าสุด 2023-04-10 ถึง 07:35