Electrical Transport — Structure, Conductivity, and Magnetic Properties of (Phthalocyaninato)nickel(II) Bromide

Measurement evidence

Electrical Transport

Structure, Conductivity, and Magnetic Properties of (Phthalocyaninato)nickel(II) Bromide · Palmer S.M., Stanton J.L., Hoffman B.M. et al. · Inorganic Chemistry · 1986 · 2296-2300

1 measurement group · 11 results

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

Four-probe low-frequency ac conductivity measurement

Electrical conductivity

single crystals of Ni(pc)Br · Single Crystal

Conductivity measured along the needle axis (c axis, stacking direction); low temperatures obtained with cold N2 gas from liquid N2 boiloff.

Temperature: ca. 300 to above 100 K
Atmosphere: cold N2 gas for low-temperature measurements
Geometry: Crystals mounted in integrated circuit cans on 8-micron graphite fibres; palladium paste electrical contacts.
Context: pristine Ni(pc)Br single crystal
Measurement source: 2297 · Experimental Section - Single-Crystal Electrical Conductivity Studies · Figure 2

Property	Reported value	Normalised value	Uncertainty	Origin and quality	Source
absolute conductivity uncertainty	Delta sigma/sigma = +/-0.4	—	—	Text Exact Reported	2297 · Experimental Section - Single-Crystal Electrical Conductivity Studies
figure-read c-axis conductivity near 125 K	ca. 245 ohm^-1 cm^-1 at 125 K from Figure 2	245 S cm^-1	visual estimate from plotted axis	Figure Axis Approximate	2298 · Results - Conductivity Measurements · Figure 2
figure-read c-axis conductivity near 200 K	ca. 200 ohm^-1 cm^-1 at 200 K from Figure 2	200 S cm^-1	visual estimate from plotted axis	Figure Axis Approximate	2298 · Results - Conductivity Measurements · Figure 2
figure-read c-axis conductivity near 300 K	ca. 125 ohm^-1 cm^-1 at 300 K from Figure 2	125 S cm^-1	visual estimate from plotted axis	Figure Axis Approximate	2298 · Results - Conductivity Measurements · Figure 2
conductivity fit gamma lower bound	gamma = 1.45-1.5 for 200 < T < 300 K	—	range	Text Range	2298 · Results - Conductivity Measurements · Equation 1
conductivity fit gamma upper bound	gamma = 1.45-1.5 for 200 < T < 300 K	—	range	Text Range	2298 · Results - Conductivity Measurements · Equation 1
irreversible conductivity loss threshold	below about 100 K	—	about	Text Approximate	2298 · Results - Conductivity Measurements · Figure 2
relative conductivity accuracy	+/-1%	0.01 fraction	—	Text Exact Reported	2297 · Experimental Section - Single-Crystal Electrical Conductivity Studies
conductivity increase on cooling to 180-200 K	about 1.8 times that at room temperature	—	—	Text Approximate	2298 · Results - Conductivity Measurements · Figure 2
room-temperature c-axis conductivity lower end	125 to 200 ohm^-1 cm^-1	125 S cm^-1	absolute conductivity Delta sigma/sigma = +/-0.4	Text Range	2298 · Results - Conductivity Measurements · Figure 2
room-temperature c-axis conductivity upper endMarked as a best value within this paper	125 to 200 ohm^-1 cm^-1	200 S cm^-1	absolute conductivity Delta sigma/sigma = +/-0.4	Text Range	2298 · Results - Conductivity Measurements · Figure 2