Nickel effects on the structure, electrical and magnetic properties of La0.7Ca0.3Mn1−xNixO3 (x=0–0.05) manganite oxide

A study of Mn‐site substitution by Ni2+ and the effect of annealing time in polycrystalline bulk La0.7Sr0.3MnO3 in composition range (0 ≤ x ≤ 0.1) is presented. This study involves structural, electrical, magnetoresistance, and thermoelectric power (TEP) measurements. X‐ray diffraction was used to examine the structure for the as‐prepared and annealed samples, and it shows that there is no change in structure with annealing time. Electrical resistivity and magnetoresistance are strongly affected by annealing process, where there is a dramatic increase in resistivity with annealing time and an enhancement in magnetoresistance in different temperature ranges. Moreover, conduction mechanisms above and below transition temperature (Tms) are discussed, since, variable‐range hopping and small‐polaron hopping models are applied above Tms, in addition to some experimental relations below it. In addition, the TEP sign changes from positive to negative with doping and annealing.

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Enhanced low-field magnetoresistance of La_0.7Sr_0.3Mn_1-xNi_xO₃compounds by annealing process

Ahmed

Abedellateef

El-Ghanny

et al. 2014

Phys. Status Solidi A

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The Effect of Co Substitution on the Crystal Structure and Electrical Resistivity of (La0.85Ag0.15)MnO3 Compounds

Srivastava

Ravi

2009

J Supercond Nov Magn

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Structural and Magneto-Transport Properties of Copper Doped Double Layered Manganites La1.4Ca1.6Mn2O7

Mahamdioua

Amira

Altintas³

et al. 2012

J Supercond Nov Magn

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Nickel effects on the structure, electrical and magnetic properties of La0.7Ca0.3Mn1−xNixO3 (x=0–0.05) manganite oxide

Cited by 9 publications

References 4 publications

Enhanced low-field magnetoresistance of La_0.7Sr_0.3Mn_1-xNi_xO₃compounds by annealing process

Enhanced low-field magnetoresistance of La_0.7Sr_0.3Mn_1-xNi_xO₃compounds by annealing process

The Effect of Co Substitution on the Crystal Structure and Electrical Resistivity of (La0.85Ag0.15)MnO3 Compounds

Structural and Magneto-Transport Properties of Copper Doped Double Layered Manganites La1.4Ca1.6Mn2O7

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Nickel effects on the structure, electrical and magnetic properties of La0.7Ca0.3Mn1−xNixO3 (x=0–0.05) manganite oxide

Cited by 9 publications

References 4 publications

Enhanced low-field magnetoresistance of La0.7Sr0.3Mn1-xNixO3compounds by annealing process

Enhanced low-field magnetoresistance of La0.7Sr0.3Mn1-xNixO3compounds by annealing process

The Effect of Co Substitution on the Crystal Structure and Electrical Resistivity of (La0.85Ag0.15)MnO3 Compounds

Structural and Magneto-Transport Properties of Copper Doped Double Layered Manganites La1.4Ca1.6Mn2O7

Contact Info

Product

Resources

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Enhanced low-field magnetoresistance of La_0.7Sr_0.3Mn_1-xNi_xO₃compounds by annealing process

Enhanced low-field magnetoresistance of La_0.7Sr_0.3Mn_1-xNi_xO₃compounds by annealing process