Abstract
The powders of the Fe93.28Si6.72 soft magnetic system and the Nd2Fe14B hard magnetic system were mixed, pressed and finally sintered at 300, 400 and 500 °C. The powder chosen for the soft phase (Fe93.28Si6.72) used was the one milled with a surfactant for 48 h and the hard phase powder was the original commercial powder without milling. The sintered samples were characterized by XRD, Mössbauer spectrometry and VSM. After this characterization, the sample with the best magnetic behavior, with a larger coercive field and saturation magnetization, was the one treated at 500 °C, however, none of the treated samples showed a perfect ferromagnetic coupling between the soft and hard phases.
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Acknowledgments
The authors express special thanks to the Research Office of the Universidad del Tolima and COLCIENCIAS, under Contract FP 44842-104-2016, for the financing of this work; also, to the Universidad del Valle for the scientific cooperation to this research work. Special thanks to Dr. J.M. Greneche for his critical review of the manuscript.
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This article is part of the Topical Collection on Proceedings of the 16th Latin American Conference on the Applications of the Mössbauer Effect (LACAME 2018), 18-23 November 2018, Santiago de Chile, Chile
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Rodriguez, H.B., Herrera, J.P.P., Lozano, D.O. et al. Study of magnetic and structural properties of Nd2Fe14B and Fe93.28Si6.72 alloys produced by mechanical alloying with surfactant. Hyperfine Interact 240, 85 (2019). https://doi.org/10.1007/s10751-019-1637-0
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DOI: https://doi.org/10.1007/s10751-019-1637-0