Electrical Transport — Solid state electrical conductivity studies on manganese-molybdenum Schiff base polymer

4 measurement groups · 14 results

Reported values remain attached to the sample, method, conditions, extraction quality and source location that produced them.

pressed manganese-molybdenum Schiff base polymer pellet · Pellet

Applied field increased from 0 to 75 V/cm at room temperature; current measured at each field

Temperature: room temperature
Geometry: pressed pellet on microscope glass plate; thin copper wire electrodes, 0.02 cm diameter, fixed by silver paint, electrode spacing about 2 mm
Context: pristine polymer
Measurement source: 404 · 3.1 Field dependent conductivity · Figure 5

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
current-field linearity	current is linearly dependent on applied field; electrode contacts were ohmic	—	—	Text Qualitative	406 · 4. Results and discussion · Figure 5

pressed manganese-molybdenum Schiff base polymer pellet · Pellet

Room temperature Hall measurement under 500 gauss magnetic field on 0.24 cm thick pellet

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
carrier density	3.49177 x 10^7 cm^-3	—	—	Table Exact Reported	406 · 4. Results and discussion · Table 1
majority carrier typeMarked as a best value within this paper	p-type	—	—	Text Qualitative	403 · Abstract
Hall mobility	409.5009 cm2/V.sec	—	—	Table Exact Reported	406 · 4. Results and discussion · Table 1
resistivity	4.893 x 10^8 ohm cm	—	—	Table Exact Reported	406 · 4. Results and discussion · Table 1

iodine-doped manganese-molybdenum Schiff base polymer pellet · Pellet

After about 8 h iodine exposure, conductivity studies were carried out at 1 h intervals; current plotted versus time at a fixed field

Temperature: room temperature
Atmosphere: iodine-doped sample measured after iodine atmosphere exposure
Geometry: same pellet/electrode geometry as field-dependent conductivity
Context: iodine-doped polymer compared with pristine polymer
Measurement source: 404 · 3.3 Effect of halogen doping on conductivity · Figure 7

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
approximate iodine-doped current at 9 h	about 20 microA at 9 h	—	visual estimate from y-axis	Visual Estimate Approximate	406 · 4. Results and discussion · Figure 7
approximate iodine-doped current at 1 h	about 620 microA at 1 h	—	visual estimate from y-axis	Visual Estimate Approximate	406 · 4. Results and discussion · Figure 7
iodine doping conductivity increase factor	6.80e-3 / 1.48e-5 = about 459-fold	—	—	Calculated From Reported Approximate	406 · 4. Results and discussion
iodine-doped specific conductivityMarked as a best value within this paper	6.80 x 10^-3 ohm^-1 cm^-1	—	—	Text Exact Reported	406 · 4. Results and discussion
iodine-doped conductivity decay with time	conductivity of doped sample decreases exponentially with time	—	—	Text Qualitative	406-407 · 4. Results and discussion · Figure 7

pressed manganese-molybdenum Schiff base polymer pellet · Pellet

Temperature varied from 306 K to 376 K in 10 K steps; ln sigma versus 1/(kT) used for activation energy

Temperature: 306-376
Geometry: pellet in 5 cm diameter Pyrex tube with externally wound 1 mm Kanthal wire; copper-constantan thermocouple at pellet
Context: pristine polymer
Measurement source: 404 · 3.2 Temperature dependent conductivity · Figures 5-6

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
activation energyMarked as a best value within this paper	0.019 eV	—	—	Text Exact Reported	406 · 4. Results and discussion · Figure 6
approximate current at 15 V	about 1.5 microA at 15 V across 33-73 C traces	—	visual estimate from plotted y-axis	Visual Estimate Approximate	406 · 4. Results and discussion · Figure 5
pristine specific conductivityMarked as a best value within this paper	1.48 x 10^-5 ohm^-1 cm^-1	—	—	Text Exact Reported	406 · 4. Results and discussion
temperature-dependence threshold	Above 346 K there is no variation with the temperature	—	—	Text Rounded Reported	406 · 4. Results and discussion · Figure 5