Doped with CeO_2 and MnCO_3, Ce:Mn:KLN crystals were grown by Czchralski method for the first time. The crystal lattice constants were measured, the crystal lattice constant of Ce:Mn:KLN decreased in compared with that of KLN.

• 在铌酸钾锂(KLN)中掺进CeO_2和MnCO_3；采用Czchralski法首次生长Ce:Mn:KLN晶体；测试晶体的晶格常数；Ce:Mn:KLN晶体的晶格常数变小.