The effect of Yb3+ ion substitution on dielectric and microstructural properties of Y3Al5O12 ceramics


ALMESSIERE M. A. , Unal B. , BAYKAL A. , ERCAN I.

JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS, cilt.30, ss.609-623, 2019 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 30 Konu: 1
  • Basım Tarihi: 2019
  • Doi Numarası: 10.1007/s10854-018-0327-z
  • Dergi Adı: JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
  • Sayfa Sayısı: ss.609-623

Özet

The electrical and dielectric properties of Y3Al5O12 (yttrium aluminum garnet, YAG) ceramics are investigated in detail. YAG:(Yb)x (0.01x0.09) was synthesized by a solid state reaction and characterized by X-ray powder diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy. The electrical and dielectric properties have been intensively studied under certain bias voltages up to a frequency of 10MHz. These properties are dependent on the substitution rates, independent of the bias voltages. The experimental result shows that Yb3+ ion substitution into YAG ceramics significantly influences the conductivity, dielectric constant, and lossy mechanisms, which is probably owing to the 3d-Al ions and 4f-Yb ions incorporated at different positions of structural symmetries in Y3-xYbxAl5O12 (0.00x0.09) ceramics.

The electrical and dielectric properties of  Y3Al5O12 (yttrium aluminum garnet, YAG) ceramics are investigated in detail. YAG:(Yb)x (0.01 ≤ x ≤ 0.09) was synthesized by a solid state reaction and characterized by X-ray powder diffraction, field emission scanning electron microscopy, and high-resolution transmission electron microscopy. The electrical and dielectric properties have been intensively studied under certain bias voltages up to a frequency of 10 MHz. These properties are dependent on the substitution rates, independent of the bias voltages. The experimental result shows that  Yb3+ ion substitution into YAG ceramics significantly influences the conductivity, dielectric constant, and lossy mechanisms, which is probably owing to the 3d-Al ions and 4f-Yb ions incorporated at different positions of structural symmetries in  Y3−xYbxAl5O12 (0.00 ≤ x ≤ 0.09) ceramics.