A modified field model of waveguide reflection dielectric resonator for microwave measurements of dielectric properties

2008 ◽  
Vol 103 (3) ◽  
pp. 034117 ◽  
Author(s):  
Jyh Sheen
Keyword(s):  
Dielectric Properties ◽  
Dielectric Resonator ◽  
Field Model ◽  
Microwave Measurements

Coexistence of 1 : 2 and 1 : 1 long-range ordering types in La-modified Ba(Mg0.33Ta0.67)O3 ceramics

1997 ◽  
Vol 12 (3) ◽  
pp. 589-592 ◽  
Author(s):  
Hyuk-Joon Youn ◽  
Kug Sun Hong ◽  
Hwan Kim
Keyword(s):  
Solid Solution ◽  
Dielectric Properties ◽  
Long Range ◽  
Phase Coexistence ◽  
Microwave Measurements ◽  
X Ray Diffraction ◽  
Physical Origin ◽  
X Ray ◽  
Wide Range ◽  
Long Range Ordering

The ordering structure of lanthanum-substituted Ba(Mg0.33Ta0.67)O3 was investigated using x-ray diffraction. It was observed that the ordering type of this solid solution transformed from 1: 2 to 1: 1 with 10 mol% substitution of La(Mg0.67Ta0.33)O3. These two types of ordering coexist over a wide range of composition. This coexistence of ordering types was considered as phase coexistence and its physical origin was investigated using microwave measurements. Based on the intensity of superlattice reflections and the discontinuity in dielectric properties, it was suggested that the coexistence of two ordering types originates from the overlap of the two stability regions.

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