<abstract abstract-type="main" xml:lang="en"> <title>Abstract</title> <p>The new single‐phase white‐light emitting phosphor of title is prepared by solid state reaction of BaCO<sub>3</sub>, CaCO<sub>3</sub>, SiO<sub>2</sub>, MnCO<sub>3</sub>, and Eu<sub>2</sub>O<sub>3</sub> (CO atmosphere, 1250 °C, 4 h).</p> </abstract>