<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>Single crystals of DyPO<sub>4</sub> are prepared by high temperature solid state reaction of a 1:20 mixture of Dy<sub>2</sub>O<sub>3</sub> and NH<sub>4</sub>H<sub>2</sub>PO<sub>4</sub> (1273 K, 1 d; controlled cooling).</p> </abstract>