Karunaratne, B.S.B.Ravirajan, P.2013-06-242013-06-241999Ceylon Journal of Science (Physical Sciences), 6(1):p.47-56https://dl.nsf.gov.lk/handle/1/9819PhysicsPositive temperature coefficient resistanceCeramicsBarium titanateResistivityManganesePositive temperature coefficient resistance (PTCR) effect of barium titanate based ceramicsA