Beschreibung:
<jats:title>Abstract</jats:title><jats:p>The new title compounds are prepared under high‐pressure/high‐temperature conditions from Ln<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> (Ln: Tb, Dy, Ho), LnF<jats:sub>3</jats:sub>, and B<jats:sub>2</jats:sub>O<jats:sub>3</jats:sub> (multianvil press, BN crucible, 900—1200 °C, 1.5—3 GPa).</jats:p>