Progress of Cryogenics and Isotopes Separation

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MAGNETIC PROPERTIES AND TRANSPORT CHARACTERISTICS OF La0.5Pr0.2Pb0.3-xSrxMnO3 MANGANITES Print

MAGNETIC PROPERTIES AND TRANSPORT CHARACTERISTICS OF La0.5Pr0.2Pb0.3-xSrxMnO3 MANGANITES

 

 

M.-L. Craus1, 2,* V. Simkin1, N. Cornei3

 

 

1Joint Institute for Nuclear Physics, 6 Joliot-Curie, 141980 Moscow region, Dubna, Russia

 

 

ABSTRACT

 

 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.  

 

Keywords: manganites, structure, transport characteristics, magnetism.


*Corresponding author: Mihail Liviu Craus, E-mail: This e-mail address is being protected from spambots. You need JavaScript enabled to view it

2National Institute of Research & Development for Technical Physics, 47 Mangeron Boulevard, 700050 Iasi, Romania;

3”Al. I. Cuza” University, Chemistry Faculty, 11 Carol I Boulevard, 700050 Iasi, Romania