Effect of Co/Mg ratio on the phase, microstructure, dielectric and impedance properties of lead zirconate titanate

Küçük Resim Yok

Tarih

2015

Dergi Başlığı

Dergi ISSN

Cilt Başlığı

Yayıncı

SPRINGER

Erişim Hakkı

info:eu-repo/semantics/closedAccess

Araştırma projeleri

Organizasyon Birimleri

Dergi sayısı

Özet

Polycrystalline PbTi0.5Zr0.3(Co1-x Mg (x) )(0.2)O-3 (x = 0.00, 0.25, 0.45, 0.65, 0.85) ceramics were synthesized using sol-gel route at 1150 A degrees C for 2 h in air. The final ceramics were characterized by X-ray diffraction (XRD), scanning electron microscopy and impedance spectroscopy. XRD studies confirmed the tetragonal symmetry (P4mm) of the sintered ceramics. The dielectric constant (epsilon(r)) was found to increase with increasing temperature in the given temperature regime (30-300 A degrees C). Sample with x = 0.25 exhibited high magnitude of epsilon(r) (4261) and dielectric loss (tan delta = 0.05) over a wide range of temperature at 100 kHz. Magnitude of tan delta of the sample with x = 0.65 was recorded to be 0.009 around room temperature at 100 kHz. Resistance of ceramic samples was decreased with an increase in temperature demonstrating a non-Debye type of relaxation process. The AC conductivity of PbTi0.5Zr0.3(Co1-x Mg (x) )(0.2)O-3 samples increased gradually with increasing temperature and frequency.

Açıklama

Anahtar Kelimeler

Kaynak

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS

WoS Q Değeri

Q2

Scopus Q Değeri

Q2

Cilt

26

Sayı

12

Künye