THE EFFECT OF Cu DOPING AND MAGNETIC FIELD ON SPECIFIC HEAT OF La0.50Ca0.50MnO3

Y. E. Gunanto (Faculty of Education, Universitas Pelita Harapan, Karawaci, Tangerang,15811)
W. Nursiyanto (Faculty of Informational Technic, Universitas Multi Media Nusantara, Tangerang)
H. Tanaka (Department of Physics, Tokyo Institute of Technology Tokyo 152-8551, Japan)
T. Ono (Department of Physics, Tokyo Institute of Technology Tokyo 152-8551, Japan)
A. Purwanto (Centre of Technology for Nuclear Industrial Materials (PTBIN) - BATAN Kawasan Puspiptek Serpong, Tangerang, 15341)
W. A. Adi (Centre of Technology for Nuclear Industrial Materials (PTBIN) - BATAN Kawasan Puspiptek Serpong, Tangerang, 15341)
S. Poertadji (Faculty of Education, Universitas Pelita Harapan, Karawaci, Tangerang,15811)

Jurnal Sains Materi Indonesia
Vol 12, No 3: JUNI 2011

THE EFFECT OF Cu DOPING AND MAGNETIC FIELD ON SPECIFIC HEAT OF La0.50Ca0.50MnO3. We report specific heat measurements of La0.50Ca0.50Mn1-YCuYO3 for y = 0.05, 0.15, 0.20 without and with applied magnetic field up to 9 T. In all cases, the external magnetic field does not influence the specific heat. At the temperature range of 100-270 K, as the Cu dopant is increased, the specific heat decreases. We found that at a range of 3-20 K, the specific heat contains terms proportional to T and T3 , but a T3/2 term is not appear. The Debye temperature is 365 K for all samples indicating that the Cu-doping is not influencing the lattice factor β.