Effect of La substitution on the microstructure and dielectric properties of the sol-gel derived BaZr0.2Ti0.8O3 thin films
Küçük Resim Yok
Tarih
2016
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
ELSEVIER SCIENCE SA
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A-site deficient Ba1-xLa2x/3(Zr0.2Ti0.8)O-3 (BLZT) thin films with x = 0.00, 0.004, 0.006, 0.008, 0.02, 0.06 were processed using a sol-gel technique. X-ray diffraction analysis was used to investigate phase evolution of BLZT films with temperature. Scanning electron microscopy and atomic force microscopy were used to investigate the microstructure and surface topography of the fabricated BLZT thin films. The samples with x = 0.00-0.008 showed a homogeneous grain size distribution and uniform surface morphology; however, a certain degree of agglomeration was observed for the samples with x > 0.008 which increased with increasing La content. The magnitude of root mean square for the samples with x = 0.00, 0.004, 0.006, 0.008, 0.02 and 0.06 was recorded to be 3.53 nm, 3.06 nm, 2.32 nm, 2.02 nm, 3.36 nm and 4.71 nm, respectively. Relative permittivity (epsilon(r)) was observed to decrease with increasing temperature, and increased non-linearly with an increase in La content. Dielectric dispersion was observed for all the BLZT samples and er decreased with increasing frequency. (C) 2016 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Sol-gel, X-ray diffraction, Microstructure, Dielectric constant, Barium zirconate titanate
Kaynak
THIN SOLID FILMS
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
611
