\documentclass[%
reprint,
superscriptaddress,
%preprint,
nofootinbib,
nobibnotes,
 amsmath,amssymb,
 aps,
%pra,
%prb,
prl,
%rmp,
%floatfix,
11pt,
]{revtex4-1}

\usepackage{graphicx}% Include figure files
\usepackage{dcolumn}% Align table columns on decimal point
\usepackage{bm}% bold math

\usepackage[utf8]{inputenc}
\usepackage[T1]{fontenc}

\usepackage{iftex}
\ifPDFTeX
   \usepackage[utf8]{inputenc}
   \usepackage[T1]{fontenc}
   \usepackage{lmodern}
\else
   \ifXeTeX
     \usepackage{xltxtra}
   \else
     \usepackage{luatextra}
   \fi
   %\setmainfont[Ligatures=TeX]{Linux Libertine O}
   %\setmainfont[Ligatures=TeX]{Arial Unicode MS}
   \setmainfont{FreeSerif}
   \setmonofont{FreeMono}
   \usepackage{polyglossia}
\fi

\usepackage[paperwidth=170mm, paperheight=140mm, margin=20mm]{geometry}
%\usepackage{etoolbox}
\linespread{1.1}%line spacing
\usepackage{setspace}
%\usepackage{caption}
\usepackage{float}

\makeatletter
\def\frontmatter@abstractwidth{370\p@}
%\def\frontmatter@title@above{\addvspace{1pt}}
\def\frontmatter@title@below{} %\addvspace{-10pt}}
%\def\frontmatter@above@affilgroup{\addvspace{-11pt}}
\def\frontmatter@preabstractspace{6\p@}
\def\frontmatter@postabstractspace{3.5\p@}
\def\frontmatter@authorformat{\centering\normalsize\addvspace{1.5\p@}}%
%%\def\frontmatter@authorformat{\centering\advance\baselineskip\p@\parskip0.1\p@\let\thanks\thanks@latex\let\and\and@space}%
%\def\frontmatter@authorbelow{\vskip -12pt}%
\def\frontmatter@abstractfont{\small\parindent0em\relax\adjust@abstractwidth}%
\makeatother

\begin{document}
\title{Magnetic and thermal properties of TbAl$_3$(BO$_3$)$_4$ borate down to 140 mK}
\author{\underline{T.~Zajarniuk}}
\affiliation{Institute of Physics, Polish Academy of Sciences, Warsaw, Poland}
\author{A.~Szewczyk}
\affiliation{Institute of Physics, Polish Academy of Sciences, Warsaw, Poland}
\author{M.U.~Gutowska}
\affiliation{Institute of Physics, Polish Academy of Sciences, Warsaw, Poland}
\author{M.I.~Pashchenko}
\affiliation{B.Verkin Institute for Low Temperature Physics and Engineering, Kharkiv, Ukraine}
\author{V.A.~Bedarev}
\affiliation{B.Verkin Institute for Low Temperature Physics and Engineering, Kharkiv, Ukraine}
\author{S.L.~Gnatchenko}
\affiliation{B.Verkin Institute for Low Temperature Physics and Engineering, Kharkiv, Ukraine}
\author{L.N.~Bezmaternykh}
\affiliation{L.V. Kirensky Inst. Phys., Siberian Branch of RAS,  Krasnoyarsk, Russia}
\author{V.L.~Temerov}
\affiliation{L.V. Kirensky Inst. Phys., Siberian Branch of RAS,  Krasnoyarsk, Russia}
\begin{abstract}
Specific heat of a trigonal TbAl$_3$(BO$_3$)$_4$ single crystal was measured between 0.14 and 300 K. At  $\textit {T}_C$ = (0.678 $\pm$ 0.002)K, a second order  phase transition, accompanied by a $\lambda$-type anomaly, was discovered. It was interpreted as being related to the appearance of a long range magnetic (probably antiferromagnetic) order of Tb$^{3+}$ magnetic moments. Studies of the influence of magnetic field (up to 1 T) applied along the trigonal axis on the transition and on the specific heat, aimed at determining the kind of magnetic order and explaining whether the transition has a classical or a quantum character, were performed. Lowering the transition temperature, damping the anomaly, and appearance of the Schottky anomaly (related to excitations of the Tb$^{3+}$ ions) were observed with increase of the field.

\begin{spacing}{1.8}
\end{spacing}
\begin{spacing}{0.9}
\textit{The work was partly supported by the European Regional Development Fund, through the Innovative Economy Grant POIG.01.01.02-00-108/09.}
\end{spacing}
\end{abstract}
\maketitle

\end{document}
