Sintesis material penyerap gelombang mikro la1 xsrx fe0 5mn0 25ti0 25 o3 dalam sistem komposit melalui proses pemaduan mekanik dan sonikasi daya tinggi = Synthesis of microwave absorber material of la1 x srx fe0 5mn0 25ti0 25 o3 in a composite system through mechanical alloying and high power sonication processes - Mas Ayu Elita Hafizah, author (2013)