Electrical Resistivity Studies of Iron–Nitrogen Solid Solutions

Abstract

The electrical resistivity of iron-nitrogen solid solutions prepared from high purity iron has been studied as a function of applied longitudinal magnetic fields up to 60 kOe a t 4.2 OK. It is demonstrated that the presence of interstitial nitrogen increases the resistivity of iron and alters the shape of resistivity vs. magnetic field curves, particularly a t low fields.By extrapolating the data to B = 0, where B is the internal magnetic induction, it has been possible to determine that the residual resistivity contribution per 1 at% nitrogen in solid solution in iron is about 6.1 pncm.

Electrical resistivity increase rates in Fe-C and Fe-N solid solutions during neutron irradiation at 4.5 K

“…The testing current (0.1 A) was uninterrupted to avoid scatter from irreversible magnetoresistive effects. (15) A recording sequence took about 70 sec with the current readings interspersed at intervals of -10 sec within a sequence. This procedure resulted in about 500 data points for each specimen during the 5,265 min irradiation.…”

The Influence of Adsorption on Electrical and Magnetic Properties of Thin Metal Films

“…Accordingly, Wagenblast and Arajs (1968) found a strong increase of the resistivity of iron on dissolution of up to 0.18 at % of nitrogen (about 7 x 10-6 ohm cm/at.%). Grabke (1967) investigated at 773 °K the effect of a further slight increase in the nitrogen content of an iron specimen with the composition FeN 0 .…”

“…25 , which is also displayed by the titanium hydrogen system. Wagenblast and Arajs (1968) determined the resistivities of their nitrogen-containing iron samples at 4.2° and 78 °K. It appeared that Matthiesen's rule is not completely obeyed; at lower temperatures the increase in the resistivity is smaller than at higher temperatures.…”

Electrical resistance of hydrogen charged zone-melted and Armco iron in magnetic field at 20 °K

“…The hydrogen content in the iron was determined by measuring the amounts of the gas desorbed from the specimens at room temperature a K4 0 physica status solidi (a) 14 The presented results show that the contribution of hydrogen to A q of iron i s small, similarly a s it i s for niobium ( l l ) , tantalum (12), jnd vanadium (13). On the other hand, the contribution of dissolved carbon (14) and nitrogen (9) to the electrical resistivity of iron ( A ?…”