Effect of sintering temperature and grain size on the electrical transport properties of La0.67Sr0.33MnO3 manganite

2015 ◽  
Vol 640 ◽  
pp. 77-81 ◽  
Author(s):  
H. Baaziz ◽  
N.K. Maaloul ◽  
A. Tozri ◽  
H. Rahmouni ◽  
S. Mizouri ◽  
...  
Keyword(s):  
Grain Size ◽  
Transport Properties ◽  
Electrical Transport ◽  
Sintering Temperature ◽  
Electrical Transport Properties

Effect of Sintering on Structural and Transport Properties on Nanosized Pr0.85Na0.15MnO3

2015 ◽  
Vol 1107 ◽  
pp. 272-277 ◽  
Author(s):  
Siau Wei Ng ◽  
Kean Pah Lim ◽  
S.A. Halim ◽  
Hassan Jumiah ◽  
Albert H.M. Gan ◽  
...  
Keyword(s):  
Grain Size ◽  
Transport Properties ◽  
Electrical Transport ◽  
Boundary Effect ◽  
Sol Gel ◽  
Magnetic Layer ◽  
Electrical Transport Properties ◽  
Orthorhombic Crystal ◽  
Orthorhombic Crystal Structure ◽  
Semiconductor Behavior

We have investigated the structural, microstructure and electrical transport properties of nanosized Pr0.85Na0.15MnO3 (PNMO) synthesized by sol-gel technique and sinter from 600°C to 1000°C. The grain size increases from 67 nm (S600) up to 284 nm (S1000) due to the grain growth during heat treatment. XRD showed that single phase orthorhombic crystal structure of PNMO is fully forms started at 600°C. The resistivity decreased with the increased of grain size and crystallite size due to the reduction of grain boundary effect (dead magnetic layer) which improved their grain conductivity.All samples showed semiconductor behavior where their metal insulator transition temperatures (TMIT) were estimated to be lower than 80K.

Effect of sintering temperature on electrical transport properties of La0.67Ca0.33MnO3

2005 ◽  
Vol 357 (3-4) ◽  
pp. 370-379 ◽  
Author(s):  
G. Venkataiah ◽  
D.C. Krishna ◽  
M. Vithal ◽  
S.S. Rao ◽  
S.V. Bhat ◽  
...  
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Sintering Temperature ◽  
Electrical Transport Properties

Effects of Sintering Temperature on Structural and Electrical Transport Properties of Zinc Ferrites Prepared by Sol-Gel Route

2012 ◽  
Vol 510-511 ◽  
pp. 585-590
Author(s):  
M. Anis-ur-Rehman ◽  
M.A. Malik ◽  
I. Ahmad ◽  
S. Nasir ◽  
M. Mubeen ◽  
...  
Keyword(s):  
Transport Properties ◽  
Crystallite Size ◽  
Electrical Transport ◽  
Sintering Temperature ◽  
Sol Gel ◽  
Average Crystallite Size ◽  
Phenomenological Theory ◽  
Electrical Transport Properties ◽  
Ac Electrical Conductivity ◽  
Scherrer Formula

The effects of sintering temperature on the structural and electrical transport properties of nanocrystalline zinc ferrites are reported. The zinc ferrites were prepared by WOWS sol-gel synthesis route. The prepared sample was sintered at temperatures 500°C, 700°C and 900°C respectively for 2 h. X-ray Diffraction (XRD) technique was used to describe the structural properties. The crystallite size, lattice parameters and porosity of samples were measured from the analysis of XRD data. The average crystallite size for each sample was measured using the Scherrer formula by considering the most intense (3 1 1) peak. The dielectric constant (ε), dielectric loss tangent (tan) and AC electrical conductivity of nanocrystalline Zn ferrites are investigated as a function of frequency and sintering temperature. All the electrical properties are explained in accordance with MaxwellWagner model and Koops phenomenological theory.

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