Thickness dependence on structural, dielectric and AC conduction studies of vacuum evaporated Sr doped BaTiO3 thin films

Calcium hafnium titanate, Ca(HfxTi1-x)O3 (CHT) was prepared using the conventional solid state reaction route. The X-ray diffraction patterns were used for analyzing the phase compositions. The XRD patterns revealed the arrangement of a single phase perovskite structure and therefore the structure is transformed from non-centrosymmetric orthorhombic (Pbnm) to centrosymmetric cubic (Pm-3m) at 0.4 ≤ x. Lattice parameter, crystallite size, densities and porosity were calculated. The SEM morphology of CHT at various hafnium (x), which is comprises of round-rod shaped grains with small pores microstructure. The substitution of Hf4+ ions over Ti4+, the microwave dielectric constant (ε r) decreases from 145 to 52, while the quality factor (Qxf) increases from 8105 to 24305 GHz and temperature coefficient of resonant frequency tuned towards zero τ f ∼ 4.5 ppm °C−1. Good combination of microwave dielectric material properties was accomplished for the composition x = 0.8 (at 3 GHz).

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“…The lattice strain is determined from the equation [20]. The calculated values of the lattice strain are given in table 2.…”

Section: Phase Formation Analysismentioning

confidence: 99%

Structural investigation and improvement of microwave dielectric properties in Ca(HfxTi1-x)O3 ceramics

Zaman

Uddin²,

Mehboob

et al. 2020

Phys. Scr.

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Structural Evaluation, Optical, and Dielectric Properties of Ba-Doped Ca4Ti3O10-Sintered Ceramics

Ali

Zaman

Khan

et al. 2022

J Supercond Nov Magn

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Structural, optical, electrical and dielectric properties of (Sr1-xMgx)(Sn0.5Ti0.5)O3 (X=0.00, 0.25, 0.50, 0.75) ceramics via solid state route

Abbas

Ullah

Ullah³

et al. 2021

Ceramics International

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Thickness dependence on structural, dielectric and AC conduction studies of vacuum evaporated Sr doped BaTiO3 thin films

Cited by 9 publications

References 21 publications

Structural investigation and improvement of microwave dielectric properties in Ca(HfxTi1-x)O3 ceramics

Structural investigation and improvement of microwave dielectric properties in Ca(HfxTi1-x)O3 ceramics

Structural Evaluation, Optical, and Dielectric Properties of Ba-Doped Ca4Ti3O10-Sintered Ceramics

Structural, optical, electrical and dielectric properties of (Sr1-xMgx)(Sn0.5Ti0.5)O3 (X=0.00, 0.25, 0.50, 0.75) ceramics via solid state route

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