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Document Type

Research

Abstract

Further investigation of the Hall effect and specific resistance in thin films of iron, cobalt, nickel , palladium, and platinum give the following results: (1) the specific resistances of films deposited on a cool surface range from 4 to 30 times the accepted values for the corresponding bulk metals; (2) the Hall coefficients for the paramagnetic metals palladium and platinum are slightly smaller than bulk values: (3) the Hall coefficients for iron, cobalt, and nickel deposited on a cool surface are respectively 1.8 times, 5 times, and 7 times, the bulk values; (4) heating films of iron, cobalt, and nickel during deposition causes both the Hall coefficients and specific resistances to decrease almost to bulk values; (5) saturation of the Hall effect occurs for iron at a slightly lower magnetic field than for bulk values, for cobalt at 12500 as compared with 13500 for bulk, and for nickel at 2500 as compared with 6000 for bulk; and (6) microscopic investigation of nickel and cobalt shows some evidence of crystal structure.

Publication Date

1925

Journal Title

Proceedings of the Iowa Academy of Science

Volume

32

Issue

1

First Page

382

Last Page

382

Copyright

©1925 Iowa Academy of Science, Inc.

Language

en

File Format

application/pdf

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