Systematic comprehension the metal phase of Pr0.7(CaxSr1-x)0.3MnO3 via temperature and magnetic induction

TL;DR

This study develops numerical methods to predict resistivity in Pr0.7(CaxSr1-x)0.3MnO3 based on temperature and magnetic induction, enhancing understanding of magneto-resistive behavior in this material.

Contribution

It introduces quantitative analysis techniques linking resistivity to temperature and magnetic induction using non-linear curve fitting, specifically applied to Pr0.7(CaxSr1-x)0.3MnO3.

Findings

Resistivity can be accurately predicted below the transition temperature.

Magnetic induction significantly shifts the temperature-resistivity curve.

Ca substitution influences magneto-resistivity properties.

Abstract

Temperature, magnetic induction and substitution dependent resistivity are a crucial factor in determining the physical properties of magneto-resistive materials. The first objective of this work was to find out an applicable method of using temperature to predict the resistivity of Pr0.7(CaxSr1-x)0.3MnO3 in the metal phase within the transition area. Based on non-linear curve fitting, a typical numerical method is used to quantitatively analyze the temperature-dependent resistivity within temperatures lower than the metal-insulator transition temperature (Tp). The simulations agree very well with the observed curves (resistivity versus temperature). The second objective of this work is to search for the applicable method to link magneto-resistivity to magnetic induction, calculation on the principle of non-linear curve fitting, four typical numerical methods are highlighted because the magnetic induction-dependent magneto-resistivity are quantitatively analyzed by these methods. The observed effects of magnetic induction on the shift of temperature-resistive curve should be more essential in physics and are quantitatively discussed in magneto-resistive materials. Lastly, the influences of Ca substitution on magneto-resistivity are detected.