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Synthesis and Characterization of A0.67Sr0.33MnO3 (A=Pr and Nd) Manganites


Affiliations
1 Department of Physics, Govt. College for Women, Gandhi Nagar, Jammu-180008 (J&K), India
2 Department of Physics, Sidharth Govt. College, Nadaun-177033 (H.P.), India
3 Department of Physics, Barkatullah University, Bhopal-462026 (M.P.), India
4 Central European Institute of Technology, BUT, Brno, Czech Republic
 

We have reported the results of resistivity behaviour of A0.67Sr0.33MnO3, (A=Pr, Nd) manganites. The samples have been synthesised by solid state reaction method. These compounds are characterized for phase formation by using standard X-Ray diffraction (XRD) technique and low temperature resistivity versus temperature (R-T) measurement. The XRD patterns are indexed in orthorhombic unit cell (space group- Pnma) using Celref program. The absence of any impurity peak shows the monophasic nature of the prepared samples. The low temperature resistivitytemperature study show metal to insulator transition at 290 K and 250 K for Pr0.67Sr0.33MnO3 and Nd0.67Sr0.33MnO3 respectively. The resistivity properties are presented and discussed here in the light of the various conduction mechanisms of the prepared samples.

Keywords

Manganites, RT Behaviour, Curve Fitting.
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  • Synthesis and Characterization of A0.67Sr0.33MnO3 (A=Pr and Nd) Manganites

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Authors

Bharat Singh
Department of Physics, Govt. College for Women, Gandhi Nagar, Jammu-180008 (J&K), India
Naresh Kumar
Department of Physics, Sidharth Govt. College, Nadaun-177033 (H.P.), India
Shammi Kumar
Department of Physics, Govt. College for Women, Gandhi Nagar, Jammu-180008 (J&K), India
Masroor Ahmad Bhat
Department of Physics, Barkatullah University, Bhopal-462026 (M.P.), India
Rajneesh Mohan
Central European Institute of Technology, BUT, Brno, Czech Republic
N. K. Gaur
Department of Physics, Barkatullah University, Bhopal-462026 (M.P.), India

Abstract


We have reported the results of resistivity behaviour of A0.67Sr0.33MnO3, (A=Pr, Nd) manganites. The samples have been synthesised by solid state reaction method. These compounds are characterized for phase formation by using standard X-Ray diffraction (XRD) technique and low temperature resistivity versus temperature (R-T) measurement. The XRD patterns are indexed in orthorhombic unit cell (space group- Pnma) using Celref program. The absence of any impurity peak shows the monophasic nature of the prepared samples. The low temperature resistivitytemperature study show metal to insulator transition at 290 K and 250 K for Pr0.67Sr0.33MnO3 and Nd0.67Sr0.33MnO3 respectively. The resistivity properties are presented and discussed here in the light of the various conduction mechanisms of the prepared samples.

Keywords


Manganites, RT Behaviour, Curve Fitting.