2013, Volume 16, Issue 2
Magnetic Properties and Transport Characteristics of La0.5Pr0.2Pb0.3-xSrxMnO3 Manganites
1 National Institute of Research & Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, Romania;
2 Joint Institute for Nuclear Physics, 6 Joliot-Curie, 141980 Moscow region, Dubna, Russia
3 ”Al. I. Cuza” University, Chemistry Faculty, 11 Carol I Boulevard, 700050 Iasi, Romania
The manganites were intensively studied in last twenty years, due to their properties and possibility of applications as magnetoresistive sensors. We investigated La0.5Pr0.2Pb0.3-xSrxMnO3 manganites due to their potential, for applications to sensors working near room temperature. The samples were sintered in air and proofed for phase composition and microstructural parammeters by XRD methods. Data on magnetic and transport properties were obtained at temperatures between 77 and 400 K. The substitution of Pb with Sr leads to important structural changes, a transition from cubic to rhombohedral structure taking place for x>0.05. We observed a large magnetoresistance near temperature.
Manganites, structure, transport characteristics, magnetism.
Tag search Manganites structure transport characteristics magnetism