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Hydrogenization of Zr0.9Ti0.1CrxFe2-x Intermetallic Compounds: Free Electron Model for Magnetic Susceptibility and Thermoelectric Power

Published

Author(s)

S. Niyomsoan, P. Termsuksawad, Ronald B. Goldfarb, David Olson, B. Mishra, Z Gavra, V I. Kaydanov

Abstract

The magnetic susceptibility and thermoelectric power of Zr0.9Ti0.1CrxFe2-x intermetallic compounds were investigated as functions of hydrogen content. The alloys are all paramagnetic, with magnetic susceptibility and Seebeck coefficient increasing with the amount of stored hydrogen. The susceptibility is proportional to the Seebeck coefficient and to d-electron concentration, consistent with a free-electron model.  The susceptibility of alloys with lower iron concentration suggests exchange-enhanced Pauli paramagnetism.  However, Curie-Weiss paramagnetism likely coexists in alloys with higher iron content.  Magnetic and electronic measurements may be used to assess the ability of an alloy to store hydrogen.  
Proceedings Title
Review of Quantitative Nondestructive Evaluation Proceedings
Volume
27
Conference Dates
July 20-25, 2008
Conference Location
Chicago, IL
Conference Title
Review of Quantitative Nondestructive Evaluation

Keywords

Electronic structure, free electron model, hydrogen absorption, hydrogen storage, magnetic susceptibility, magnetization, metal hydrides, Seebeck coefficient, thermoelectric power.
Created January 24, 2008, Updated February 19, 2017