Resistivity, I–V characteristics and Hall effect in Dy0.5(Sr1-xCax)0.5MnO3 manganites
Source abstract
Abstract
Abstract Dy 0.5 (Sr 1-x Ca x ) 0.5 MnO 3 (x = 0 and x = 0.3) manganites were synthesized using sol-gel method. Both samples exhibited an insulating behavior in the whole temperature range. Even the application of 5 T magnetic fields does not change this state. Conduction mechanisms were also investigated. The I–V characteristics of both samples present Ohmic behavior at minor voltages. Magnetoresistance and electroresistance were also studied. The thermal variation of Hall resistivity of Dy 0.5 Sr 0.5 MnO 3 was determined in cooling down and warming up processes revealing electron-like type of charge carriers. Temperature coefficient of resistance shows significant values for both systems making them good candidates for bolometer applications.
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Research context
OpenAlex topics: Magnetic and transport properties of perovskites and related materials · Multiferroics and related materials · Electronic and Structural Properties of Oxides
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