Effects of Disorder on the Transition Temperature and Transport Properties of a Low-TcA15Superconductor:Mo3Ge.

1979 ◽  
Vol 42 (1) ◽  
pp. 77-77
Author(s):  
M. Gurvitch ◽  
A. K. Ghosh ◽  
B. L. Gyorffy ◽  
H. Lutz ◽  
O. F. Kammerer ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Transport Properties ◽  
Effects Of Disorder

Effects of Disorder on the Transition Temperature and Transport Properties of a Low-TcA15Superconductor:Mo3Ge

1978 ◽  
Vol 41 (23) ◽  
pp. 1616-1619 ◽  
Author(s):  
M. Gurvitch ◽  
A. K. Ghosh ◽  
B. L. Gyorffy ◽  
H. Lutz ◽  
O. F. Kammerer ◽  
...  
Keyword(s):  
Transition Temperature ◽  
Transport Properties ◽  
Effects Of Disorder

Magnetic, Electronic - and Magneto - Transport Properties of Nanocrystalline Nd0.6Sr0.4MnO3 Manganites

2009 ◽  
Vol 67 ◽  
pp. 131-136 ◽  
Author(s):  
Kundu Sourav ◽  
Kumar Nath Tapan
Keyword(s):  
Particle Size ◽  
Grain Size ◽  
Transition Temperature ◽  
Curie Temperature ◽  
Transport Properties ◽  
Significant Variation ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Low Field

We have reported in this paper, the effect of grain size in Nd0.6Sr0.4MnO3 .We have investigated the effect of grain size on metal-insulator transition and Curie temperature. We have also reported here the variation of low field magnetoresistance with temperature and grain size. We have observed that the Curie temperature increases monotonically with particle size. The metal insulator transition temperature initially increases with particle size and then gets fixed to a certain value. In these Nd0.6Sr0.4MnO3 nanometric systems, any significant variation of magnetoresistance with particle size is not observed.

TRANSPORT PROPERTIES OF Ag-DOPED La0.7Ca0.3MnO3 THIN FILMS ON SILICON SUBSTRATE

2010 ◽  
Vol 24 (27) ◽  
pp. 5451-5456 ◽  
Author(s):  
H. C. JIANG ◽  
W. L. ZHANG ◽  
X. F. CAO ◽  
W. X. ZHANG ◽  
B. PENG
Keyword(s):  
Thin Films ◽  
Transition Temperature ◽  
Transport Properties ◽  
Silicon Substrate ◽  
Annealing Temperature ◽  
Rf Magnetron Sputtering ◽  
Insulator Transition ◽  
Metal Insulator Transition ◽  
Metal Insulator ◽  
Higher Temperature

Ag -doped La 0.7 Ca 0.3 MnO 3 (LCMO) films were prepared on silicon substrate by RF magnetron sputtering. The dependences of transport properties on annealing temperature were explored. It is shown that the resistivity of the samples decreases and the metal–insulator transition temperature shifts to higher temperature with the increase in annealing temperature. Two metal–insulator transition temperatures are presented in the R – T plots of Ag -doped LCMO films, which can be explained by the Ag 1+ substitution of La 3+ to form La 1-x Ag x MnO 3 compound. Compared with LCMO thin films, Ag -doping can observably improve the TM-I and decrease the resistivity of the samples.

Synthesis and Gas Transport Properties of New High Glass Transition Temperature Ring-Opened Polynorbornenes

2002 ◽  
Vol 35 (12) ◽  
pp. 4677-4684 ◽  
Author(s):  
Armando Pineda Contreras ◽  
Mikhail A. Tlenkopatchev ◽  
Maria del Mar López-González ◽  
Evaristo Riande
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Transport Properties ◽  
Gas Transport ◽  
High Glass Transition Temperature ◽  
Gas Transport Properties

EFFECTS OF PLASMA OXIDATION ON TRANSPORT PROPERTIES OF SPUTTERED Y-Ba-Cu-O FILMS

1989 ◽  
Vol 03 (01) ◽  
pp. 87-92
Author(s):  
T. NOJIMA ◽  
S. AWAJI ◽  
Y. MAENO ◽  
T. FUJITA
Keyword(s):  
Transition Temperature ◽  
Transport Properties ◽  
Superconducting Transition Temperature ◽  
Superconducting Transition ◽  
Plasma Oxidation ◽  
Normal Resistance ◽  
Before And After ◽  
Zero Resistance

Effects of plasma oxidation on superconducting and normal properties were studied for rf-sputtered Y-Ba-Cu-O films. The plasma oxidation was performed in a mixture gas of Ar-50%O 2 both before and after annealing. The oxidation enhances superconducting transition temperature, T c , and improves metal-like behavior of normal resistance as well. Typical films obtained after the oxidation exhibited the transition with an onset at 94 K and with zero resistance below 82 K. The improvement was found to hold for more than 30 days after oxidation.

Proton transport properties of proton-conducting phosphate glasses at their glass transition temperatures

2019 ◽  
Vol 21 (20) ◽  
pp. 10744-10749 ◽  
Author(s):  
Takahisa Omata ◽  
Takuya Yamaguchi ◽  
Satoshi Tsukuda ◽  
Tomohiro Ishiyama ◽  
Junji Nishii ◽  
...  
Keyword(s):  
Glass Transition ◽  
Transition Temperature ◽  
Glass Transition Temperature ◽  
Transport Properties ◽  
Proton Transport ◽  
Phosphate Glasses ◽  
Proton Mobility ◽  
Glass Transition Temperatures ◽  
Proton Conducting ◽  
Proton Transport Properties

Proton mobility at the glass transition temperature of 32 proton-conducting phosphate glasses converges between 2 × 10−9 and 2 × 10−7 cm2 V−1 s−1.

Effect of (La0.67Ca0.33MnO3)x (x = 0.0 – 0.6) Addition in YBa2Cu3O7-δ System on the Structure and Transport Properties

2012 ◽  
Vol 501 ◽  
pp. 314-318
Author(s):  
B.N. Fadilah ◽  
S.A. Halim ◽  
M. Hashim
Keyword(s):  
Transition Temperature ◽  
Transport Properties ◽  
Xrd Analysis ◽  
Magnetic Behaviour ◽  
Superconducting Transition ◽  
X Ray Diffraction ◽  
Temperature Dependent ◽  
Space Group ◽  
Crystal System ◽  
Average Grain Size

The effect of LCMO addition in YBCO system to investigate changes in structure and transport properties is reported. Samples with addition of (La0.67Ca0.33MnO3)x (LCMO) (x=0.0-0.6) in YBa2Cu3O7-δ(YBCO) superconducting system were prepared via solid state reaction. The effect of magneto resistive components on the superconducting properties of YBCO was investigated through X-Ray diffraction (XRD), resistance-temperature (R-T) measurement, and Scanning Electron Microscope (SEM). XRD analysis showed the addition of LCMO (0.2 wt% - 0.6 wt%) formed four new phases. The crystal system still orthorhombic with space group Pmmm after addition 0.2 wt% and 0.4 wt% of LCMO but the crystal system was changed to tetragonal and space group P4/mmm when addition with 0.6 wt% of LCMO. The temperature dependent of electrical resistance showed the samples were metallic above the transition temperature even though after addition. TheTc(onset)superconducting transition temperature decreased from 84 K to 66 K while theTc (offset)decreased from 72°C to 54°C. This suppression was due to the magnetic behaviour of the LCMO. The average grain size decreased when addition with LCMO were increased.

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