﻿252 
  On 
  the 
  Electric 
  Resistance 
  of 
  Films 
  of 
  Cobalt 
  fyc. 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  1 
  \ 
  

  

  

  3\ 
  

  

  4 
  

  

  5 
  

  

  6 
  

  

  7 
  

  

  8 
  

  

  9 
  

  

  10 
  

  

  II 
  

  

  12 
  

  

  13 
  

  

  14 
  

   EX 
  

  

  F 
  

  

  15 
  

  

  TERN 
  

  

  IELD 
  

  

  16000 
  

   AL 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  V 
  I 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  -XV 
  

  

  ( 
  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  

  AV11 
  

  

  5000 
  

  

  K 
  1 
  — 
  E. 
  

   ~R~' 
  

  

  L 
  

  

  von. 
  

  

  In 
  the 
  iron 
  films 
  the 
  variation 
  of 
  resistance 
  with 
  fields 
  up 
  

   to 
  16,000 
  C.Gr.S. 
  units 
  due 
  to 
  transverse 
  magnetization 
  was 
  

   so 
  small 
  that 
  even 
  in 
  the 
  most 
  favourable 
  case 
  not 
  more 
  than 
  

   30 
  scale-divisions' 
  reading 
  could 
  be 
  observed 
  on 
  the 
  galvano- 
  

   meter-scale. 
  So 
  far 
  as 
  conclusions 
  from 
  such 
  slight 
  effects 
  

   could 
  be 
  relied 
  upon, 
  it 
  appeared 
  as 
  if 
  the 
  resistance 
  variation 
  

   was 
  not 
  proportional 
  to 
  the 
  magnetization 
  squared. 
  

  

  Conclusions. 
  

  

  (1) 
  Films 
  of 
  nickel, 
  cobalt, 
  and 
  iron 
  show 
  a 
  change 
  in 
  their 
  

   electrical 
  resistance 
  when 
  brought 
  into 
  a 
  sufficiently 
  strong 
  

  

  