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\begin{document}
\title{Microstructure and Magnetic Properties of CeFeB Powder Prepared by High-energy Ball Milling}
\author{\underline{M. Grigoras}}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\author{G. Stoian}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\author{L. Budeanu}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\author{A. Damian}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\author{H.~Chiriac}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\author{N.~Lupu}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\author{M.~Lostun}
\affiliation{National Institute of Research and Development for Technical Physics, Iasi, Romania}
\begin{abstract}
The cost and availability pressure of rare-earth (RE), especially for Nd and Dy that are essential for high performance of Nd$_2$Fe$_{14}$B-type permanent magnets (PM), have forced the research on more economically materials. In this sense Ce is of interest given that it is the most abundant RE element. In powder technology, which is the preferred method of PM preparation, keeping of hard magnetic properties unaltered during the milling process, it is a challenge. Considering these aspects, the aim of our work is to investigate the effect of the milling environment on the microstructure and magnetic properties of Ce–Fe–B powders prepared by high-energy ball milling starting from Ce$_{10+x}$Fe$_{84-x}$B$_6$ ($x$=0-6) ribbons. By controlling the parameters of milling, we have managed to obtain powders with Hc=5.95 kOe, Mr=7.56 kG, and (BH)max=8.16 MGOe, values are almost identical to those of the precursors.

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\textit{This work was supported by a grant of the Romanian National Authority for Scientific Research and Innovation, CNCS - UEFISCDI, project number PN-II-RU-TE-2014-4-1431}
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\end{abstract}
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\end{document}
