Influence of cryogenic temperature on magnetic properties of soft magnetic composites

• Published in: Powder metallurgy Vol. 57; no. 2; pp. 155 - 160
• Main Authors: Jankowski, B., Kapelski, D., Karbowiak, M., Przybylski, M., Ślusarek, B.
• Format: Journal Article
• Language: English
• Published: London, England Taylor & Francis 01.04.2014; SAGE Publications; Maney
• Subjects: Applied sciences; Cryogenic condition; Exact sciences and technology; Magnetic measurements; Metals. Metallurgy; Powder metallurgy. Composite materials; Production techniques; Soft magnetic composites; Technology; Magnetic measurements; Cryogenic condition; Soft magnetic composites; Powder metallurgy; Cryogenic temperature; Composite material; Magnetic properties
• ISSN: 0032-5899; 1743-2901
• DOI: 10.1179/1743290114Y.0000000086

Magnetic properties of Fe based composite materials with different particle sizes under a cryogenic condition have been investigated. Realisation of this venture has been carried out at the liquid nitrogen temperature. Results of energy loss density were obtained from measurements of the static (dc) hysteresis cycles ranging from 0·1 to 1·0 T. In turn, results of power loss density were obtained from measurements of the dynamic (ac) hysteresis cycles ranging from 50 to 1000 Hz and at the maximum flux density of 0·5, 0·8 and 1·0 T. The study confirmed the influence of temperature on magnetic parameters. It has been shown that total power loss density has increased with decreasing temperature. We report changes in a nature of energy loss after immersing specimens made of soft magnetic composites in liquid nitrogen. Measurements of the maximum relative permeability were also conducted.