Spinel Mg(Al, Ga)^sub 2^O^sub 4^ Solid Solution as High-Performance Microwave Dielectric Ceramics

Spinel Mg... solid solutions were synthesized via solid-state method. Replacement of Al... by Ga... in ... gave rise to the expansion of the lattice, as well as blueshifts of FT-IR and Raman peaks. The homogeneous solid solutions, high relative densities, large grain sizes, and compact microstructur...

Full description

Saved in:
Bibliographic Details
Published inJournal of the American Ceramic Society Vol. 97; no. 11; p. 3555
Main Authors Wu, Songping, Xue, Juanjuan, Fan, Yingxian
Format Journal Article
LanguageEnglish
Published Columbus Wiley Subscription Services, Inc 01.11.2014
Subjects
Ceramic sintering
Dielectric properties
Grain size
Microstructure
Solid solutions
Online AccessGet full text

Cover

More Information
Summary:Spinel Mg... solid solutions were synthesized via solid-state method. Replacement of Al... by Ga... in ... gave rise to the expansion of the lattice, as well as blueshifts of FT-IR and Raman peaks. The homogeneous solid solutions, high relative densities, large grain sizes, and compact microstructures resulted in excellent microwave dielectric properties for spinel Mg... (x = 0.6) ceramics sintered at 1485...C: that is, ... = 8.87, Q x f = 107 000 GHz (at 14.8 GHz), and ... = -16 ppm/...C. Spinel-structured Mg(Al1-... (x = 0-1) solid solutions possessed low sintering temperatures, wide temperature regions (~100...C), and small negative ... values. These outstanding performance make Mg(Al, Ga)... a promising candidate material for millimeter-wave devices. (ProQuest: ... denotes formulae/symbols omitted.)
ISSN:0002-7820
1551-2916