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Effects of Gd.sup.3+ Substitution on the Fabrication of Transparent ([Y.sub.1-x]Gd.sub.x)3[Al.sub.5]O.sub.12 Ceramics.(Report)

To authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1551-2916.2010.03726.x Byline: Xiaodong Li ([double dagger]), Ji-Guang Li ([double dagger],s.), Zhimeng Xiu ([double dagger]), Di Huo ([double dagger]), Xudong Sun ([double dagger]) Abstract: Gadoli... Full description

Journal Title: Journal of the American Ceramic Society August, 2010, Vol.93(8), p.2229(7)
Main Author: Li, Xiaodong
Other Authors: Li, Ji - Guang , Xiu, Zhimeng , Huo, Di , Sun, Xudong
Format: Electronic Article Electronic Article
Language: English
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ID: ISSN: 0002-7820
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title: Effects of Gd.sup.3+ Substitution on the Fabrication of Transparent ([Y.sub.1-x]Gd.sub.x)3[Al.sub.5]O.sub.12 Ceramics.(Report)
format: Article
creator:
  • Li, Xiaodong
  • Li, Ji - Guang
  • Xiu, Zhimeng
  • Huo, Di
  • Sun, Xudong
subjects:
  • Powders (Particulate matter) -- Analysis
  • Sintering -- Analysis
  • Anisotropy -- Analysis
  • Ceramics -- Analysis
  • Rare Earth Metal Compounds -- Analysis
ispartof: Journal of the American Ceramic Society, August, 2010, Vol.93(8), p.2229(7)
description: To authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1551-2916.2010.03726.x Byline: Xiaodong Li ([double dagger]), Ji-Guang Li ([double dagger],s.), Zhimeng Xiu ([double dagger]), Di Huo ([double dagger]), Xudong Sun ([double dagger]) Abstract: Gadolinium has been frequently used in scintillators to enhance the X-ray stopping power and in phosphors to improve the luminescent properties. In this paper, the fabrication of Gd.sup.3+-substituted transparent (Y1-xGd.sub.x)3[Al.sub.5]O.sub.12 (x=0.01, 0.5, 0.75, and 1) ceramics via solid reactive sintering has been investigated. The effects of Gd.sup.3+ substitution on the phase evolution of the powder mixture, sintering behavior of the powder compact, and properties of the resultant ceramics were mainly demonstrated. It is shown that Gd.sup.3+ substitution favors the formation of kinetically stable intermediate compounds, particularly REAlO.sub.3 (RE=Y+Gd), and thus retards the crystallization of an R[E.sub.[3]Al.sub.5]O.sub.12 garnet. The samples of x=1 composition cracked upon vacuum sintering at temperatures above 1600[degrees]C, mainly due to the volumetric expansion induced by garnet formation. The transparent [Y.sub.1.[48]Gd.sub.1.5]C[e.sub.0.02]A[l.sub.5]O.sub.12 ceramic (inline transmittance: [proportional to]65% at 800 nm) vacuum sintered at 1700[degrees]C shows an emission band peaked at [proportional to]570 nm upon UV excitation at 340 nm, exhibiting a red-shift by [proportional to]40 nm in comparison with the regular emission from YAG:Ce. Author Affiliation: ([double dagger])Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China (s.)Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Article History: Manuscript No. 26866. Received September 23, 2009; approved February 11, 2010. Article note: [dagger]Author to whom correspondence should be addressed. e-mail: xdsun@mail.neu.edu.cn
language: English
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identifier: ISSN: 0002-7820
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  • 0002-7820
  • 00027820
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titleEffects of Gd.sup.3+ Substitution on the Fabrication of Transparent ([Y.sub.1-x]Gd.sub.x)3[Al.sub.5]O.sub.12 Ceramics.(Report)
creatorLi, Xiaodong ; Li, Ji - Guang ; Xiu, Zhimeng ; Huo, Di ; Sun, Xudong
ispartofJournal of the American Ceramic Society, August, 2010, Vol.93(8), p.2229(7)
identifierISSN: 0002-7820
subjectPowders (Particulate matter) -- Analysis ; Sintering -- Analysis ; Anisotropy -- Analysis ; Ceramics -- Analysis ; Rare Earth Metal Compounds -- Analysis
descriptionTo authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1551-2916.2010.03726.x Byline: Xiaodong Li ([double dagger]), Ji-Guang Li ([double dagger],s.), Zhimeng Xiu ([double dagger]), Di Huo ([double dagger]), Xudong Sun ([double dagger]) Abstract: Gadolinium has been frequently used in scintillators to enhance the X-ray stopping power and in phosphors to improve the luminescent properties. In this paper, the fabrication of Gd.sup.3+-substituted transparent (Y1-xGd.sub.x)3[Al.sub.5]O.sub.12 (x=0.01, 0.5, 0.75, and 1) ceramics via solid reactive sintering has been investigated. The effects of Gd.sup.3+ substitution on the phase evolution of the powder mixture, sintering behavior of the powder compact, and properties of the resultant ceramics were mainly demonstrated. It is shown that Gd.sup.3+ substitution favors the formation of kinetically stable intermediate compounds, particularly REAlO.sub.3 (RE=Y+Gd), and thus retards the crystallization of an R[E.sub.[3]Al.sub.5]O.sub.12 garnet. The samples of x=1 composition cracked upon vacuum sintering at temperatures above 1600[degrees]C, mainly due to the volumetric expansion induced by garnet formation. The transparent [Y.sub.1.[48]Gd.sub.1.5]C[e.sub.0.02]A[l.sub.5]O.sub.12 ceramic (inline transmittance: [proportional to]65% at 800 nm) vacuum sintered at 1700[degrees]C shows an emission band peaked at [proportional to]570 nm upon UV excitation at 340 nm, exhibiting a red-shift by [proportional to]40 nm in comparison with the regular emission from YAG:Ce. Author Affiliation: ([double dagger])Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China (s.)Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Article History: Manuscript No. 26866. Received September 23, 2009; approved February 11, 2010. Article note: [dagger]Author to whom correspondence should be addressed. e-mail: xdsun@mail.neu.edu.cn
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titleEffects of Gd.sup.3+ Substitution on the Fabrication of Transparent ([Y.sub.1-x]Gd.sub.x)3[Al.sub.5]O.sub.12 Ceramics.(Report)
descriptionTo authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1551-2916.2010.03726.x Byline: Xiaodong Li ([double dagger]), Ji-Guang Li ([double dagger],s.), Zhimeng Xiu ([double dagger]), Di Huo ([double dagger]), Xudong Sun ([double dagger]) Abstract: Gadolinium has been frequently used in scintillators to enhance the X-ray stopping power and in phosphors to improve the luminescent properties. In this paper, the fabrication of Gd.sup.3+-substituted transparent (Y1-xGd.sub.x)3[Al.sub.5]O.sub.12 (x=0.01, 0.5, 0.75, and 1) ceramics via solid reactive sintering has been investigated. The effects of Gd.sup.3+ substitution on the phase evolution of the powder mixture, sintering behavior of the powder compact, and properties of the resultant ceramics were mainly demonstrated. It is shown that Gd.sup.3+ substitution favors the formation of kinetically stable intermediate compounds, particularly REAlO.sub.3 (RE=Y+Gd), and thus retards the crystallization of an R[E.sub.[3]Al.sub.5]O.sub.12 garnet. The samples of x=1 composition cracked upon vacuum sintering at temperatures above 1600[degrees]C, mainly due to the volumetric expansion induced by garnet formation. The transparent [Y.sub.1.[48]Gd.sub.1.5]C[e.sub.0.02]A[l.sub.5]O.sub.12 ceramic (inline transmittance: [proportional to]65% at 800 nm) vacuum sintered at 1700[degrees]C shows an emission band peaked at [proportional to]570 nm upon UV excitation at 340 nm, exhibiting a red-shift by [proportional to]40 nm in comparison with the regular emission from YAG:Ce. Author Affiliation: ([double dagger])Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China (s.)Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Article History: Manuscript No. 26866. Received September 23, 2009; approved February 11, 2010. Article note: [dagger]Author to whom correspondence should be addressed. e-mail: xdsun@mail.neu.edu.cn
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abstractTo authenticate to the full-text of this article, please visit this link: http://dx.doi.org/10.1111/j.1551-2916.2010.03726.x Byline: Xiaodong Li ([double dagger]), Ji-Guang Li ([double dagger],s.), Zhimeng Xiu ([double dagger]), Di Huo ([double dagger]), Xudong Sun ([double dagger]) Abstract: Gadolinium has been frequently used in scintillators to enhance the X-ray stopping power and in phosphors to improve the luminescent properties. In this paper, the fabrication of Gd.sup.3+-substituted transparent (Y1-xGd.sub.x)3[Al.sub.5]O.sub.12 (x=0.01, 0.5, 0.75, and 1) ceramics via solid reactive sintering has been investigated. The effects of Gd.sup.3+ substitution on the phase evolution of the powder mixture, sintering behavior of the powder compact, and properties of the resultant ceramics were mainly demonstrated. It is shown that Gd.sup.3+ substitution favors the formation of kinetically stable intermediate compounds, particularly REAlO.sub.3 (RE=Y+Gd), and thus retards the crystallization of an R[E.sub.[3]Al.sub.5]O.sub.12 garnet. The samples of x=1 composition cracked upon vacuum sintering at temperatures above 1600[degrees]C, mainly due to the volumetric expansion induced by garnet formation. The transparent [Y.sub.1.[48]Gd.sub.1.5]C[e.sub.0.02]A[l.sub.5]O.sub.12 ceramic (inline transmittance: [proportional to]65% at 800 nm) vacuum sintered at 1700[degrees]C shows an emission band peaked at [proportional to]570 nm upon UV excitation at 340 nm, exhibiting a red-shift by [proportional to]40 nm in comparison with the regular emission from YAG:Ce. Author Affiliation: ([double dagger])Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110004, China (s.)Nano Ceramics Center, National Institute for Materials Science, Tsukuba, Ibaraki 305-0044, Japan Article History: Manuscript No. 26866. Received September 23, 2009; approved February 11, 2010. Article note: [dagger]Author to whom correspondence should be addressed. e-mail: xdsun@mail.neu.edu.cn
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