Enhanced gyromagnetic properties of NiCuZn ferrite ceramics for LTCC applications by adjusting MnO2-Bi2O3 substitution

Microstructure, magnetic, and power loss characteristics of low‐sintered NiCuZn ferrites with La2O3‐Bi2O3 additives

“…The coercivity of the ferrite can be expressed as Equation () 27 $$$$\begin{equation}{H_c} = \ 3\left( {\frac{{{K_c}{T_c}{K_1}}}{{a{M_s}}}} \right)\left( {\frac{1}{D}} \right)\!, \end{equation}$$$$where $${T_c}$$ is the Curie temperature, K 1 is the first magnetocrystalline anisotropy constant, $${M_s}$$ is the saturation magnetization, a is the lattice constant, and D is the grain size 28,29 . According to the above XRD and EDS results, some La 3+ ions have entered the lattice after addition.…”

“…27 : where 𝑇 𝑐 is the Curie temperature, 𝐾 1 is the first magnetocrystalline anisotropy constant, 𝑀 𝑠 is the saturation magnetization, a is the lattice constant, and D is the grain size. 28,29 According to the above XRD and EDS results, some La 3+ ions have entered the lattice after addition. Moreover, it has earlier been shown that the entry of ions with larger radii into the lattice will increase the asymmetric structure of the ferrite and lower its Curie temperature.…”

Advances in the application of manganese dioxide and its composites for theranostics

“…Manganese dioxide (MnO 2 ) is one of the most interesting inorganic compounds due to its excellent physicochemical properties (high oxidation, light absorption capabilities). 1,2 Recently, it has been prepared in a variety of forms, such as nanodots, 3 nanorods/fibers, 4 nanosheets, 5 mesopores/molecular sieves, 6 branched structures 7 and aggregates/flowers, 8 and widely used in catalysts, 9,10 oxidants, 11 ferrites, 12,13 achromats 14 and battery materials. 15,16 It is also used in disease diagnosis and treatment.…”

Synergistic effect of V2O5 and Bi2O3 on the grain boundary structure of high-frequency NiCuZn ferrite ceramics

“…Among soft magnetic ferrites, NiCuZn ferrites have better electromagnetic properties, including high permeability, high resistivity, and good phase stability at high temperatures. However, recent studies have concentrated more on its microwave absorption properties, direct current-bias-superposition usages, and low temperature co-fired ceramic (LTCC) applications [43][44][45]. Few studies have reported on the power electronic applications of NiCuZn ferrites.…”