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\begin{document}
\title{Effect of annealing on the magnetic state in Ni-doped FeRh alloys}
\author{\underline{A.~Chirkova}}
\affiliation{IFW Dresden, PO Box 270118, 01171 Dresden, Germany}
\affiliation{Institute of Metal Physics, Ekaterinburg, Russia}
\author{A.~Funk}
\affiliation{IFW Dresden, PO Box 270118, 01171 Dresden, Germany}
\author{K.~Nenkov}
\affiliation{IFW Dresden, PO Box 270118, 01171 Dresden, Germany}
\author{N.~Baranov}
\affiliation{Institute of Metal Physics, Ekaterinburg, Russia}
\affiliation{Ural Federal University, Ekaterinburg, Russia}
\author{L.~Schultz}
\affiliation{IFW Dresden, PO Box 270118, 01171 Dresden, Germany}
\author{T.G.~Woodcock}
\affiliation{IFW Dresden, PO Box 270118, 01171 Dresden, Germany}
\begin{abstract}
Nearly equiatomic FeRh alloys are well-known for an antiferromagnetic (AF) - ferromagnetic (FM) phase transition. The transition temperature \textit{T$_t$} in Fe$_{49}$Rh$_{51}$ can be lowered by Ni-doping; applied pressure broadens the AF region raising \textit{T$_t$} or induces an AF state in FM alloys [1]. (Fe$_{0.965}$Ni$_{0.035}$)$_{49}$Rh$_{51}$ samples show AF or FM states depending on the heat treatment. Long term annealing and quenching produce the AF state, whereas cooling at 1 K/min results in the FM state. SEM and XRD analyses show FCC phase precipitates additionally to the main CsCl-type phase. The precipitates cause expansion of the AF region [2]. An explanation of this could be the strain on the phase boundaries due to the higher density of the FCC phase.


\textbf{References:}
\begin{spacing}{0.8}

{\scriptsize[1] Kamenev K., Arnold Z., Kamarád J., Baranov N.V., J. Alloys Compd., 252 (1997) 1-5}

{\scriptsize[2] Takahashi M., Oshima R., Mater. Trans. JIM, 36 (1995) 735-742 }
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\begin{spacing}{1.4}
\textit{We are thankful to Dr. K.-H. Müller for valuable discussions}
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\end{abstract}
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\end{document}
