RESEARCH STUDY OF CHEMISORPTION BY MAGNETO ABSORPTION

reportActive / Technical Report | Accession Number: AD0273750 | Open PDF

Abstract:

The effect of adsorbed H on the magnetic losses in finely divided Ni at 3.7 and 13 mcsec. was studied. The increased sensitivity at these frequencies is attributed to a difference in relaxation times for particles of different sizes. Experiments designed to detect the effect of adsorbed H on the microwave absorption of Fe and Ni single crystals are described. Possible reasons for the lack of a clear-cut effect are discussed. Ferromagnetic resonance spectra of finely divided Ni are described. The effects of adsorbed H on the intensity, g-value and line width of the resonance are discussed. It is demonstrated that the well-known magnetic effects of chemisorbed H on Ni, which have been measured at static and low frequency fields, can be observed also by magnetic resonance and with a sensitivity at least 10 to the 5th power greater, in terms of weight of metal required.

Author(s):
Hollis, Donald P.
Author Organization(s):
VARIAN ASSOCIATES INC PALO ALTO CA
Supplementary Note:
DOI: 10.21236/AD0273750
Pagination:
0090

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TR ASD-TR-61-138
Contract/Grant Number(s):
AF 33(616)-6287
Task Number(s):
73664
Project Number(s):
7022
Monitor Series:
AFSC
 Subject Terms
Joint Capability Areas:
JCA_1.2.7_Experimentation; JCA_6.3.3_Spectrum Management; JCA_5_Command and Control; JCA_6_Net Centric; JCA_1_Force Support; JCA_5.3_Planning; JCA_1.2_Force Preparation; JCA_6.3_Net Management; JCA_1.2.3_Educating; JCA_6.4.1_Secure Information Exchange; JCA_3.2_Engagement; JCA_3_Force Application; JCA_4.5.4_Requirements Definition; JCA_4.5_Operational Contract Support; JCA_3.2.1_Kinetic Means; JCA_6.4_Information Assurance
Modernization Areas:
Microelectronics
Communities of Interest:
Advanced Electronics
Descriptor(s):
*HYDROGEN, *ADSORPTION, *NICKEL, *FERROMAGNETIC MATERIALS, PARTICLES, MICROWAVE SPECTROSCOPY, SILICON COMPOUNDS, RADIOFREQUENCY, FERROMAGNETISM, SPECTROGRAPHY, DIOXIDES, SURFACES, IRON, SINGLE CRYSTALS, MAGNETIC PROPERTIES, CATALYSTS
Field(s)/Group(s):
Inorganic Chemistry
Report Date:
1962 Jan 01