Magnetic Properties of Manganese-Zinc Soft Ferrite Ceramic for High Frequency Applications

Abstract

A soft magnetic MnZn-type ferrite is considered for high frequency applications. First, the morphological, structural, and chemical composition of the material are presented and discussed. Subsequently, by using a vibrating sample magnetometer (VSM), the hysteresis loops are recorded. The open magnetic circuit measurements are corrected by employing demagnetization factors, and by taking into consideration the local magnetic susceptibility. Finally, the hysteresis losses are estimated by the Steinmetz approach, and the results are compared with available commercial information provided by selected MnZn ferrite manufacturers. Such materials are representative in planar inductor and transformer cores due to their typically low losses at high frequency, i.e., up to several MHz, in low-to-medium power applications and providing high efficiency of up to 97%–99%.

Insight into three‐dimensional flow of three different dynamics of nanofluids subject to thermal radiation: The case of water–cobalt ferrite, water–manganese–zinc ferrite, and water–magnetite

“…Bahiraei and Hangi 17 reviewed the MNFs in numerous thermal applications such as thermomagnetic convection, heat pipes, and coolant in the thermal management system. Petrescu et al 18 highlight the magnetic properties of Mn–ZnFe 2 O 4 (soft ferrite) for high‐frequency transformer cores and planar induct applications. Experimental works pertaining to ferrofluids were conducted by Ghofrani et al, 19 Yang et al, 20 and Patel et al 21 …”

“…15,16 Bahiraei and Hangi 17 reviewed the MNFs in numerous thermal applications such as thermomagnetic convection, heat pipes, and coolant in the thermal management system. Petrescu et al 18 highlight the magnetic properties of Mn-ZnFe 2 O 4 (soft ferrite) for high-frequency transformer cores and planar induct applications. Experimental works pertaining to ferrofluids were conducted by Ghofrani et al, 19 Yang et al, 20 and Patel et al 21 The investigation of heat transfer and boundary layer flow shows an upturn trend and perennial demands for its contribution in manufacturing processes like hot rolling of continuous filaments, glass-fiber production, polymer extrusion, and crystal growing.…”

A High-Performance Magnetic Shield with MnZn Ferrite and Mu-Metal Film Combination for Atomic Sensors

“…It was discovered that the magnetic noise was mostly caused by the complex permeability and conductivity of the material. The conductivity of MnZn ferrite material was ~10 −6 S/m less than that of mu-metal material [ 17 , 18 ]. Through theoretical calculation and experimental research, the noise of the ferrite shield has been reduced by 25 times to 0.75 fT/Hz 1/2 compared with the noise of the mu-metal shield, which is above 40 Hz.…”

Influence of MnZn Ferrite Homogeneous Fibers on the Microstructure, Magnetic, and Mechanical Properties of MnZn Ferrite Materials

“…MnZn ferrite is an important member of the soft magnetic materials, which has been widely used in network communication, information storage, automatic control, medical diagnosis, and various apparatuses from household appliances to scientific equipment [1][2][3]. Moreover, it has superior characteristics such as high magnetic permeability, high electrical resistivity, high stability, large magnetic induction, and low magnetic loss [4][5][6]. Thus, it is crucial to develop MnZn ferrite exhibiting better performances with the rapid development of modern science and technology.…”