Oxidation of cobalt and iron near the <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>ε</mi><mo>→</mo><mi>γ</mi></math></span> and <span class="aps-inline-formula"><math xmlns="http://www.w3.org/1998/Math/MathML" display="inline"><mi>α</mi><mo>→</mo><mi>γ</mi></math></span> structural phase transitions

A. L. Cabrera; B. C. Sales; M. B. Maple

doi:10.1103/PhysRevB.25.1688

Oxidation of cobalt and iron near the $ε \to γ$ and $α \to γ$ structural phase transitions

A. L. Cabrera, B. C. Sales, and M. B. Maple

Phys. Rev. B 25, 1688 – Published 1 February 1982

Abstract

The oxidation rates of cobalt and iron as a function of oxide thickness and temperature have been measured in the vicinity of the $hcp \to fcc (ε \to γ)$ and $bcc \to fcc (α \to γ)$ crystallographic-phase-transition temperatures using a gravimetric technique. The oxidation rate of both metals changed markedly at the structural-phase-transition temperature. The effects of a crystallographic versus a magnetic phase change on the oxidation rates are compared.

Received 23 March 1981

DOI:https://doi.org/10.1103/PhysRevB.25.1688

Authors & Affiliations

A. L. Cabrera^*, B. C. Sales, and M. B. Maple

Institute for Pure and Applied Physical Sciences, University of California, San Diego, La Jolla, California 92093

^*Present address: Material and Molecular Research Division, Lawrence Berkeley Laboratory, University of California, Berkeley, Calif. 94720.

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Vol. 25, Iss. 3 — 1 February 1982

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