Soft magnetic, gyromagnetic, and microstructural properties of BBSZ-Nb2O5 doped NiCuZn ferrites for LTCC applications

Investigation on the micro-structure and magnetic properties of LMZBS-Bi2O3 doped low-temperature sintered NiCuZn ferrites

“…Figure 3 gives the x-ray diffraction patterns of the LMZBS-Bi 2 O 3 doped NiCuZn. It was evident that all the XRD patterns of the NiCuZn ferrites were indexed to a cubic lattice and there were no other impurity peaks appearing in the XRD patterns, indicating that all the as-prepared NiCuZn samples had no heterozygous phases and there was only existing a single-crystalline phase structure [22][23][24]. Moreover, there was also no obvious shift in the peak position of XRD pattern, suggesting no substitution taken place in the process of the solid-phase reaction.…”

“…As shown in figure 5, it was obvious that the bulk density of the as-prepared NiCuZn ferrites increased first and then decreased as the addition content of Bi 2 O 3 increased. This result suggested that NiCuZn ferrites had a good crystallization and densification during the preparation [22][23][24]. In particular, when the x value was 0.3, the LMZBS-Bi 2 O 3 significantly promoted the densification and growth of the grain of the NiCuZn ferrites at the low sintering temperature of 910 °C.…”

“…The addition of LMZBS-Bi 2 O 3 maded a greater influence on u′ than u″. It is well known that the change of permeability is caused by two kinds of magnetization mechanisms: spin rotation and magnetic domain wall motion [24,34,35]. When the NiCuZn was doped with 0.2 wt% LMZBS and 0.3 wt% Bi 2 O 3 , the highest permeability was obtained.…”

“…Herein, in order to further evaluate the performances of LMZBS-Bi 2 O 3 doped NiCuZn ferrite, a series of NiCuZn ferrites doped by other kinds of dopants including V 2 O 3 , LMZBS, Bi 2 O 3 -Nb 2 O 5 and BBSZ-Nb 2 O 5 were prepared as the previous researches reported [21,22,24,29]. Their magnetic properties were measured under the same condition and table 1 listed the results.…”

CSRR-SIW wireless passive high quality factor temperature sensor

“…Li Q et al proposed a method of preparing high-performance LTCC materials by adjusting the content of the sintering auxiliaries in the ceramic preparation. high-performance LTCC materials [7], which not only effectively improved the densities of ceramics during sintering, but also improved the microwave performance of LTCC, making it possible to be used as a substrate material for wireless transmission sensors. Wireless passive sensors play a critical role in hightemperature environments due to the susceptibility of wired sensors to lead failures in such conditions.…”