2007
DOI: 10.2109/jcersj.115.254
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Distribution and Solubility Limit of Al in Al2O3-Doped ZnO Sintered Body

Abstract: A few mol! Al 2 O 3 -doped ZnO sintered body forms a substitutional solid solution and the semi-conducting property is drastically affected by the content of the dissolved Al. It was suggested from the results of XRD and EPMA that Al existed in the ZnO sintered body in the form of ZnAl 2 O 4 . Furthermore, the distribution of ZnAl 2 O 4 was visualized by AFM and SEM. It was, however, difficult for these techniques to detect dissolved Al in ZnO grains directly. The SIMS mapping suggested that the trace amount o… Show more

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Cited by 77 publications
(60 citation statements)
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“…The solubility of Al in ZnO has been determined to be ³0.3 at%. 40) Thus this value is included for all samples. For the 10 at% Mn-doped ZnO sample, a value of 8 at% Mn is used because this is near the solubility limit of Mn at 1400°C in ZnO.…”
Section: Thermal Transportmentioning
confidence: 99%
“…The solubility of Al in ZnO has been determined to be ³0.3 at%. 40) Thus this value is included for all samples. For the 10 at% Mn-doped ZnO sample, a value of 8 at% Mn is used because this is near the solubility limit of Mn at 1400°C in ZnO.…”
Section: Thermal Transportmentioning
confidence: 99%
“…The solubility limit of Al in ZnO is 0.3 mol%, which is smaller than the amount of Al2O3 added. 45) . The excess amount of Al might be segregated in the grain boundary and could be present as a secondary phase (ZnAl2O4).…”
Section: Al-doped Zno Ceramicsmentioning
confidence: 99%
“…The solubility limit of Al in ZnO is 0.3 mol%, which is smaller than the amount of Al2O3 added in this study. 17) The excess amount of Al might be segregated in the grain boundary and might be present as a secondary phase (ZnAl2O4). 9) However, the grain boundary and the secondary phases were not considerably different in the case of the mechanical treatment and ball milling processes except for the size of the secondary phase; this implied that the microstructure had a small effect on the difference in the electrical conductivity observed in this study.…”
Section: Microstructure and Electrical Property Of Zno Ceramicsmentioning
confidence: 99%