학술논문
Phase Composition and Microwave Dielectric Properties of xLnAlO3-(1-x)Ln1/3NbO3.
Document Type
Article
Author
Source
Subject
*PHASE transitions
*MICROWAVES
*DIELECTRICS
*ALUMINUM compounds
*NIOBIUM compounds
*X-ray diffraction
*PERMITTIVITY
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Language
ISSN
0015-0193
Abstract
The phase composition and microwave dielectric properties of xLnAlO3-(1-x)Ln1/3NbO3 (Ln: LA, Nd, 0 ≤ x ≤ 0.9) have been investigated by XRD, EDS, SEM and network analyzer in this paper. All samples with x>0 exhibited multiple phases. Both of dielectric permittivity and temperature coefficient of resonant frequency decreased with the increase of x when x<0.4 and varied little with further increasing x. Q × f value increased with the increase of x. Good combined microwave dielectric properties could be obtained for the samples with x = 0.9: εr = 22.4, Q × f = 49439GHz, τf = -30ppm/°C for La-series and εr = 21.1, Q × f = 54540GHz, τf = -44.8ppm/°C for Nd series. [ABSTRACT FROM AUTHOR]