Dielectric investigation of the Sr₃WO₆ double perovskite at RF/microwave frequencies

Abstract

This work reports the dielectric properties of Sr3WO6 (SWO) double perovskite at radio frequencies as a function of the temperature and a study in microwaves range to evaluate the material as a novel dielectric resonator.

Dielectric relaxation and magneto-electric characteristics of lead-free double perovskite: Sm2NiMnO6

“…To know the highest probable information concerning the electrical characteristics of the compound, CIS method is adapted which contains four basic formalisms: impedance, admittance, permittivity, and modulus formalism. Every individual yields a broad extent of graphical investigation relating to these electrical characteristics [22,23]. To differentiate grain, grain boundary, and electrode response of the material, the impedance measurement has been done in the frequency range of 1 kHz-1 MHz and the temperature frequency of 25-300 ℃.…”

Synthesis and Study of the Effect of Ba2+ Cations Substitution with Sr2+ Cations on Structural and Optical Properties of Ba2−xSrxZnWO6 Double Perovskite Oxides (x = 0.00, 0.25, 0.50, 0.75, 1.00)

“…Many researchers are interested in double perovskite oxides that consist of transition metals [ 1 ]. These materials represent a large part of material science research because of the diversity in their physical and chemical characteristics, and their diverse applications [ 1 , 2 , 3 , 4 , 5 , 6 ], such as light harvesting (LaNiMnO 6 ) [ 2 ], ferroelectrics (Pb 2 Mn 0.6 Co 0.4 WO 6 ) [ 5 ], Multiferroic (Bi 2 NiMnO 6 , Bi 2 FeCrO 6 ) [ 6 ], superconductivity (Sr 2 YRu 0.95 Cu 0.05 O 6 ) [ 7 ], magneto resistance (Sr 2 FeMoO 6 ) [ 8 ], dielectric resonators (Ca 2 AlTaO 6 , SrAlTaO 6 ) [ 9 ], and photo-catalysis (Cs 2 BiAgCl 6 ) [ 10 ].…”

“…Chufeng Lau et al [ 2 ] used XRD, photoelectron spectroscopy, and UV-Vis-NIR spectroscopy to describe the LaNiMnO 6 compound and studied the possibility for its solar cell applications. Paiva et al [ 3 ] used the PANalytical diffractometer and Solartron 1260 impedance analyzer to study the structure and microwave properties of Sr 3 WO 6 , which is used in Bluetooth and mobile system devices for microwave telecommunications through wireless antennae. By utilizing the conventional solid-state ceramic route, BiCu 2 VO 6 and BiCa 2 VO 6 powders, which are used in low-temperature co-fired ceramic applications, were prepared and examined using XRD, SEM, and the TE 01δ shielded cavity method with a network analyzer (8720ES) and temperature chamber (Delta 9023) to characterize their structure and microwave dielectric behaviors.…”

Electrical Properties of Sr3Mo1–xWxO6‐Based Solid Solution

“…The other samples tend to exhibit an undefined maximum value, which suggests that the relaxation process in these samples may be occurring at values below 100 Hz. Sr 3 Mo 0.1 W 0.9 O 6 also exhibits an ε r value (304.81) higher than that of SWO (92.68) [ 17 ] at 100 Hz, probably owing to the distortions in the crystal lattice, resulting in a higher polarization of the dipoles [ 23,24 ] . In addition to the intrinsic effects due to the structure, the higher ε r values can also be attributed to the increased sinterability of the Sr 3 Mo 0.1 W 0.9 O 6 sample, as shown in Figure 2e.…”

“…[ 11–14 ] Among the several perovskites studied in the literature, strontium molybdate (Sr 3 MoO 6 , SMO) and strontium tungstate (Sr 3 WO 6 , SWO) have been promising due to their versatility and prospective applications, such as white light emitting diodes, [ 15 ] electroceramic capacitors, and microwave devices. [ 16,17 ]…”