With the method of high temperature solid state reaction and stockbarger, the authors synthesized a series of powder phosphors of KMgF3-Ce3+, KMg1-xMxF3-Ce3+ (M = Be2+, Ca2+) and the single crystal of KMgF3-Ce3+ were synthesized. The authors tested their excitation and emission spectra, found two emission centers in KMgF3-Ce3+ and demonstrated that they resulted from different charge compensating ways. The structural anal. on KMgF3-Ce3+ from a four-cycle diffractometer and spectral anal. on KMg1-xMxF3-Ce3+ (M = Be2+, Ca2+), indicated that Ce3+ ion only substituted K+ site in KMgF3.

Key words: BERYLLIUM COMPOUNDS, CALCIUM COMPOUDS, CERIUM, FOUR-CIRCLE DIFFRACTOMETER, EXCITATION SPECTRUM, EMISSION SPECTRA