Multi-layered-stack thermoelectric generators using p-type Sb 2 Te 3 and n-type Bi 2 Te 3 thin films by radio-frequency magnetron sputtering

Highly oriented crystal growth of nanocrystalline bismuth telluride thin films with anisotropic thermoelectric properties using two-step treatment

Synthesis and surface characterization of the La0.7-xPrxCa0.3MnO3 (LPCM) perovskite by a non-conventional microwave irradiation method

Structural, magnetic, magnetocaloric and electrical studies of Dy 0.5 (Sr 1-x Ca x ) 0.5 MnO 3 manganites

Comparison of structural, magnetic and electrical transport behavior in bulk and nanocrystalline Nd-lacunar Nd0.67Sr0.33MnO3 manganites

Structural, electrical, magnetic and thermal studies on Eu1-xSrxMnO3 (0.2 ≤ x ≤ 0.5) manganites

We present systematic studies on the effect of electron beam irradiation on structural, electrical and thermal properties of Gd0.5Sr0.5MnO3 and Dy0.5Sr0.5MnO3 manganites. The XRD patterns and Rietveld analysis show that the samples remain single phased even after they undergo electron beam irradiation. Both the series of the samples Gd0.5Sr0.5MnO3 and Dy0.5Sr0.5MnO3 show insulating trends in their temperature dependent electrical resistivity, ρ(T) behavior. The resistivity data for both the series of samples (pristine as well as irradiated) indicate that the small polaron hopping model is valid in high temperature region; on contrary, variable range hopping model governs the low temperature regime. Magnetic studies demonstrate that the Neel temperatures of pristine and irradiated samples of Gd0.5Sr0.5MnO3 and Dy0.5Sr0.5MnO3 do not change appreciably when they are subjected to irradiation. Thermo-electrical power is observed to increase with irradiation in Gd0.5Sr0.5MnO3 samples, whereas for Dy0.5Sr0.5MnO3 samples a decrease in thermo-electric power is seen when the samples are irradiated.

Influence of electron beam irradiation on the structural, electrical and thermal properties of Gd0.5Sr0.5MnO3 and Dy0.5Sr0.5MnO3 manganites

Correlation between structural and transport properties of electron beam irradiated PrMnO3 compounds

We present a systematic study on structural, electrical and magnetic properties of low bandwidth compounds of the family Sm1−xSrxMnO3. The samples were prepared by conventional solid-state reaction. Rietveld analysis of XRD results show that the samples crystallized in orthorhombic crystal structure with Pbnm space group. The unit volume is decreasing with increasing Sr concentration. The electrical resistivity is suppressed with application of magnetic field. Huge magnetoresistance has been observed for samples with x=0.4 and x=0.5. The validity of the percolation model has been verified in the entire temperature range. The magnetic studies show that the field-induced critical temperature and Neel temperature transitions are seen in all compounds. The samples with x=0.2 and 0.3 show positive S values in the entire temperature range. The Seebeck coefficient (S) of the x=0.5 sample is negative in the entire temperature range, and for the sample with x=0.4 exhibits a crossover in S value from positive to negative values. The analysis of S data indicates that the small polaron hopping model is valid in the high temperature region.

Investigation on structural, electrical, magnetic and thermoelectric properties of low bandwidth Sm1-xSrxMnO3 (0.2≤x≤0.5) manganites

Visible-light-driven photocatalytic degradation of organic dyes over cubic-phase and hexagonal-phase CdS: a comparative study

B.S. Nagaraja

Papers

Structural, electrical, magnetic and thermal studies on Eu1-xSrxMnO3 (0.2 ≤ x ≤ 0.5) manganites

Influence of electron beam irradiation on the structural, electrical and thermal properties of Gd0.5Sr0.5MnO3 and Dy0.5Sr0.5MnO3 manganites

Correlation between structural and transport properties of electron beam irradiated PrMnO3 compounds

Investigation on structural, electrical, magnetic and thermoelectric properties of low bandwidth Sm1-xSrxMnO3 (0.2≤x≤0.5) manganites

Visible-light-driven photocatalytic degradation of organic dyes over cubic-phase and hexagonal-phase CdS: a comparative study