Effect of Chemisorbed Hydrogen on the Magnetization of Nickel

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Abstract
The effect of chemisorbed hydrogen on the saturation magnetization of nickel was investigated on fine particles of nickel. For certain preparations the saturation moment of the nickel was within 1 or 2% of that of massive nickel; this is considered evidence that the surfaces of the nickel in these samples were substantially free from chemisorbed impurities, and that the electronic state of the nickel was identical to that of massive nickel. For these preparations, hydrogen decreases the saturation moment of the nickel by about 0.7 Bohr magneton per average atom of hydrogen adsorbed. This effect appears independent of temperature up to 300°K (the highest temperature investigated) and of surface coverage over nearly the entire range.
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