TY - JOUR
T1 - Effect of Cr Doping on the Structural, Optical and Dielectric Properties of MoO3 Microrods Synthesized by Sol-Gel Auto Combustion Method
AU - Zaman, Abid
AU - Shukla, Neeraj Kumar
AU - Ali, Asad
AU - Alhodaib, Aiyeshah
AU - Tirth, Vineet
AU - Kareem, Zahraa Hashim
AU - Jabbar, Abdullah Hasan
AU - Mushtaq, Muhammad
AU - Abbas, Mujahid
AU - AlHarbi, Mona
AU - Aljohani, Mohammed
N1 - Publisher Copyright:
© 2022 by the authors.
PY - 2022/9
Y1 - 2022/9
N2 - In the present work, pure and Cr-doped MoO3 microrods were successfully prepared through the sol gel auto combustion method. The phase evaluation and microstructural, dielectric, and optical properties of synthesized samples were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and an impedance analyzer (1 MHz–3 GHz). All the samples showed hexagonal structure with space group (P63). According to Vegard’s law, lattice parameters increase with the increase in chromium (Cr3+) contents. In addition, the Williamson–Hall (W–H) plot was drawn for evaluating the micro-strain (εW-H) and crystallite size (DW-H) parameters. From microstructural analysis it was found that the size of microrods increased along with Cr3+ contents. Decreasing band gap energy was observed (from 2.98 to 2.71 eV) with increasing Cr3+ contents. The variation of the dielectric constant and tangent loss of MoO3 microrods with respect to frequency were analyzed.
AB - In the present work, pure and Cr-doped MoO3 microrods were successfully prepared through the sol gel auto combustion method. The phase evaluation and microstructural, dielectric, and optical properties of synthesized samples were investigated by using X-ray diffraction (XRD), scanning electron microscopy (SEM), energy dispersive spectroscopy (EDS), and an impedance analyzer (1 MHz–3 GHz). All the samples showed hexagonal structure with space group (P63). According to Vegard’s law, lattice parameters increase with the increase in chromium (Cr3+) contents. In addition, the Williamson–Hall (W–H) plot was drawn for evaluating the micro-strain (εW-H) and crystallite size (DW-H) parameters. From microstructural analysis it was found that the size of microrods increased along with Cr3+ contents. Decreasing band gap energy was observed (from 2.98 to 2.71 eV) with increasing Cr3+ contents. The variation of the dielectric constant and tangent loss of MoO3 microrods with respect to frequency were analyzed.
KW - band gap energy
KW - Cr-doped MoO microrods
KW - dielectric properties
KW - microstructure
KW - X-ray diffraction
UR - http://www.scopus.com/inward/record.url?scp=85138669081&partnerID=8YFLogxK
U2 - 10.3390/cryst12091259
DO - 10.3390/cryst12091259
M3 - Article
AN - SCOPUS:85138669081
SN - 2073-4352
VL - 12
JO - Crystals
JF - Crystals
IS - 9
M1 - 1259
ER -