Electron Spin Resonance of Defects Related to Thermal Conductivity in AlN Ceramics

スポンサーリンク

概要

• 論文の詳細を見る

• Defects of AlN ceramics with a thermal conductivity from 102 to 216 W m-1 K-1 are investigated using electron spin resonance (ESR). Two ESR signals at $g=2.006$ and 1.999 are related to thermal conductivity. The $g=1.999$ signal intensity increases with a decrease in thermal conductivity, an increase in oxygen concentration, and an increase in Mg concentration. The $g=1.999$ signal is tentatively supposed to be caused by an electron-trapped center. The $g=2.006$ signal intensity is increased with an increase in thermal conductivity, a decrease in oxygen concentration, and an increase in Ca concentration. A defect responsible for the $g=2.006$ signal is assigned as a hole trapped in an ON–VAl complex.

• Published by the Japan Society of Applied Physics through the Institute of Pure and Applied Physicsの論文
• 2008-08-25

著者

• Kai Ayako

  Division Of Materials Science And Engineering Yamaguchi University

• Miki Toshikatsu

  Division Of Materials Science And Engineering Yamaguchi University

• Tomohiro Daisuke

  Division of Materials Science and Engineering, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan

• Kanechika Yukihiro

  Advanced Materials Business Division, Tokuyama Corporation, Shunan, Yamaguchi 745-8649, Japan

• Kai Ayako

  Division of Materials Science and Engineering, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan

• Miki Toshikatsu

  Division of Materials Science and Engineering, Yamaguchi University, Ube, Yamaguchi 755-8611, Japan

関連論文

• Thermal Annealing of Radicals in Aragonitic CaCO_3 and CaHPO_4・2H_2O
• Spatial Variation of CO^-_2 and SO^-_3 Radicals in Massive Coral as Environmental Indicator
• Vaterite Stabilization in CaCO_3 Crystal Growth by Amino Acid(Cross-Disciplinary Areas)
• Hybrid Crystals of Calcium Carbonate and Amino Acids
• Electron Spin Resonance of Defects Related to Thermal Conductivity in AlN Ceramics

スポンサーリンク