scholarly journals Transport Properties and Magnetoresistance of La0.8Ca0.13Ag0.07MnO3 Perovskite Manganite Synthesized by Sol-Gel Method

2018 ◽  
Vol 367 ◽  
pp. 012031
Author(s):  
B. Kurniawan ◽  
F. Ruli ◽  
A. Imaduddin ◽  
R. Kamila
Keyword(s):  
Transport Properties ◽  
Sol Gel ◽  
Perovskite Manganite ◽  
Gel Method ◽  
Sol Gel Method

scholarly journals Superconducting properties and non-isothermal crystallization kinetics of a Bi2Sr2CaCu2O8+δ (Bi2212) superconductor prepared by the Pechini sol–gel method

RSC Advances ◽  
2019 ◽  
Vol 9 (60) ◽  
pp. 35280-35288 ◽  
Author(s):  
Xingming Zhao ◽  
Tianlin Wang ◽  
Songchol Hong ◽  
Dalu Sun ◽  
Nan Wang ◽  
...  
Keyword(s):  
Transport Properties ◽  
Crystallization Kinetics ◽  
Isothermal Crystallization ◽  
Sol Gel ◽  
Superconducting Properties ◽  
Isothermal Crystallization Kinetics ◽  
Gel Method ◽  
Sol Gel Method ◽  
Different Temperatures ◽  
Kinetics Of

Bi2212 superconductors with crystallization treatments at different temperatures were prepared by the Pechini sol–gel method, and their structural, thermal and transport properties were investigated.

scholarly journals Magnetic and Electrical Transport Properties of Double Perovskite Sr2FeMoO6Prepared by Sol-Gel Method

2011 ◽  
Vol 8 (s1) ◽  
pp. S189-S194 ◽  
Author(s):  
Yong-Qing Zhai ◽  
Jing Qiao ◽  
Zhang Zhang
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Room Temperature ◽  
Sol Gel ◽  
Double Perovskite ◽  
Reducing Agent ◽  
Perovskite Oxide ◽  
Electrical Transport Properties ◽  
Gel Method ◽  
Sol Gel Method

With activated carbon for reducing agent, the sol-gel method was used to prepare the giant magnetoresistance materials Sr2FeMoO6, which is the double Perovskite oxide. The structure, morphology, magnetic and electrical transport properties were investigated respectively by x-ray diffraction, scanning electron microscopy and vibrating sample magnetometer. The as-synthesized sample is Sr2FeMoO6with tetragonal crystal structure and I4/mmm space group and unit cell parameter is a = 5.580Å, c = 7.882Å. The primary particles are spherical in shape and the grain size is below 100 nm. The curie temperature is above room temperature and the saturation magnetization is 13.321 A·m2/kg under 1.0 T at room temperature. The sample exhibit typical semiconductor behavior and the conductive mechanism can be described by small polaron variable range hopping model. The room temperature magnetoresistance of the sample under 1.0 T field is up to -10.02%. Moreover, it is found the dosage of citric acid and the amount of reducing agent has great effect on the phase structure and magnetic properties of the samples.

Transport properties and dielectric response of Pr0.8Na0.2-xKxMnO3 (x = 0, 0.05, 0.1, 0.15 and 0.2) ceramics synthesized by sol–gel method

2021 ◽  
Vol 127 (8) ◽  
Author(s):  
I. Ouni ◽  
H. Ben Khlifa ◽  
R. M’nassri ◽  
Muaffaq. M. Nofal ◽  
Elham M. A. Dannoun ◽  
...  
Keyword(s):  
Transport Properties ◽  
Dielectric Response ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Structure, magnetic and transport properties of La0.7Ca0.3−Sr MnO3 thin films by sol–gel method

2015 ◽  
Vol 41 ◽  
pp. S381-S386 ◽  
Author(s):  
Danyan Cao ◽  
Yuanyuan Zhang ◽  
Wenxia Dong ◽  
Jing Yang ◽  
Wei Bai ◽  
...  
Keyword(s):  
Thin Films ◽  
Transport Properties ◽  
Sol Gel ◽  
Gel Method ◽  
Sol Gel Method

Thermal Transport Properties of Ca3Co4O9 with Mg Substitution

2011 ◽  
Vol 71-78 ◽  
pp. 959-962
Author(s):  
Xiao Ling Qi ◽  
Ling Ke Zeng ◽  
You Yu Fan
Keyword(s):  
Thermal Conductivity ◽  
Transport Properties ◽  
Room Temperature ◽  
Sol Gel ◽  
Dopant Content ◽  
Gel Method ◽  
Sol Gel Method ◽  
Mg Doping ◽  
Mg Substitution ◽  
Thermal Conductivities

Polycrystalline Ca3-xMgxCo4O9（x=0-0.3）ceramics were prepared by the sol–gel method combined with the ordinary pressing sintering and the thermal conductivities were measured from room temperature to 673 K. The influence of Mg2+ substitution for Ca2+ on the thermal conductivities of Ca3Co4O9 ceramics was investigated systematically. The influence of Mg doping on the thermal conductivities is mainly embodied in the lattice thermal conductivities, which shows a significant decrease with the increase of the dopant content for the samples with x ≤ 0.2, while the carrier thermal conductivity had no obvious change with Mg doping increasing. These results indicated that the thermal conductivities of the material could be reduced remarkably with the substitution of Mg from 1.427 W/m·K to 0.731 W/m·K at 573 K with x = 0.2.

DOPANT EFFECTS ON THE STRUCTURAL, OPTICAL AND ELECTRICAL TRANSPORT PROPERTIES IN SrTi1-xCoxO3 NANOPARTICLES SYNTHESIZED BY SOL–GEL METHOD

2010 ◽  
Vol 19 (02) ◽  
pp. 219-227
Author(s):  
DOAN THI THUY PHUONG ◽  
NGUYEN VAN MINH
Keyword(s):  
Transport Properties ◽  
Electrical Transport ◽  
Annealing Temperature ◽  
Dopant Concentration ◽  
Sol Gel ◽  
Average Particle Size ◽  
Average Particle ◽  
Electrical Transport Properties ◽  
Gel Method ◽  
Sol Gel Method

We investigate effects of Co dopant concentration on the structure, as well as optical and electrical transport properties in SrTi 1-x Co x O 3 (x = 0.00, 0.10, 0.20, 0.30, 0.40, 0.50) nanoparticles prepared by sol–gel method with annealing temperature considerably lower than that employed conventionally. The dopant-induced changes are studied by XRD, Raman, Optical absorption and Impedance measurements. The results show an average particle size of about 30 nm, and decreasing lattice parameters. In the Raman spectra, a broad structure in the region 200–500 cm-1 is almost absent and the peaks in the region 600–800 cm-1 show different relative weights with respect to those from SrTiO 3, which is related to structural changes, decreasing gap with increasing dopant concentration in conjuction with increasing grain boundary contribution to the impedance. These results also demonstrate the feasibility of synthesizing the compound with low annealing temperature.

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