Microwave dielectric property adjustment of CoZrNb2O8 ceramics by CaTiO3 addition

Crystal structure and microwave dielectric properties of Li2(Mg1–xCux)2Mo3O12 ceramics sintered at ultra‐low temperature

“…The powder samples were subjected to XPS to observe the effect of individual elemental valence on the microwave dielectric properties of Li 2 (Mg 0.9 Cu 0.1 ) 2 Mo 3 O 12 ceramics, as shown in Figure 7, and all peaks have been peak calibrated according to the C1s peak. The peaks with binding energies of 54.9, 1304.3, and 530.1 eV in Figure 7B,C,D correspond to the peaks of Mg 1s, Li 1s, and O 1s, respectively, indicating that Mg, Li, and O are present in the material as Mg 2+ , Li + , and O 2− , respectively 53,54 . The binding energies of the peaks of Mo 3d at 232 and 235.4 eV are consistent with the results of Figure 7E, indicating that Mo exists as Mo 6+ in the material 55 .…”

“…The peaks with binding energies of 54.9, 1304. as Mg 2+ , Li + , and O 2− , respectively. 53,54 The binding energies of the peaks of Mo 3d at 232 and 235.4 eV are consistent with the results of Figure 7E, indicating that Mo exists as Mo 6+ in the material. 55 Figure 7F shows the peak fitting curves for Cu 2p, the two fitted peaks at 932.7 and 954.2 eV correspond to Cu + 2p, while the two fitted peaks at 936.4 and 956.5 eV correspond to Cu 2+ 2p, which suggests the presence of both Cu + and Cu 2+ .…”

Effect of A-site modification on structural and microwave dielectric properties of calcium titanate

“…In recent work, Bai et al showed the applicability of CaTiO3 for microwave absorption in X and Ku bands [18]. The CaTiO3-based ceramics have been mostly used as one component of the composite materials to get good microwave dielectric properties due to their moderate dielectric value and positive τ f [6,11,12,[19][20][21][22][23][24]. The selection of materials for composite is essential to know its structural and microwave dielectric properties in detail.…”