resistivity temperature relationmagnetoresistancespontaneous magnetizationIn the resistivityu2013temperature curves of La0.7Ca0.3MnO3 and La0.75Ca0.25MnO3, five distinct regions have been identified. For example, in La0.7Ca0.3MnO3, the regions are: (1) from the lowest temperature of measurement to 200...
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resistivitytemperaturecoefficient电阻温度系数filamentreq Temperature coefficient of resistivity )] T T ( 1 [ o o − α + ρ = ρ )] T T ( 1 [ R R o o − α + = ρ T 0 = reference temperature α = temperature coefficient of resistivity, units of (ºC) -1 For Ag, Cu, Au...
to the area of the cross-section. resistivity is defined as the resistance offered by the material per unit length for a unit cross-section. the si unit of resistivity is ohm-meter. resistivity increases linearly with temperature. the resistivity of conductors is low compared to the insulators...
constant over the range of interest and V obeys a strictly linear relation to I. Materials are said to be ohmic when V depends linearly on R. Metals are ohmic so long as one holds their temperature constant. But changing the temperature of a metal changes R slightly. When the current chan...
1.Theresistancevariation of carbon-epoxy composite during strain and flexural were studied on this paper,and the relation curve of theresistancewith strain was drawn.本文研究了碳/环氧复合材料在拉伸和弯曲过程中试样电阻率随外力作用而变化情况,并建立了电阻与应变关系曲线。
Table 1 Transport parameters and London penetration depth at zero temperature. Full size table Full size image The above relation betweendρ/dTandλL2can be extended to various other strongly correlated superconductors with linear-Tresistivity. The data are summarized in Fig.2on a log-log scale....
The variation of logarithm of resistivity with reciprocal of temperature shows a definite kink near Curie temperature. The plot of resistivity obeys the Arrhenius relation. It has been found that the resistivity decreases with WO additives significantly. 3The activation energy in paramagnetic region and...
device's high-temperature performance and excellent moistureresistivityofup to 0.5%, allows these AEC-Q200-compliant resistors [...] digikey.ca digikey.ca 这些电阻器在 +85°C 时的额定功率为150mW,并具有出色的高温性能和高达 0.5% 的耐潮性,因而符合 AEC-Q200 标准,能在苛刻的工作环境下实现高可靠...
Temperature changes have a great influence on sound absorption [34]. The absorption peak will move to the high-frequency range with increasing temperature, and vice versa. This is due to the change of sound speed, wavelength, and the airflow resistance as temperatures change. Humidity also has...