Magnetic ordering transition in Mg0.9Fe0.1SiO3 orthopyroxene

M. P. Pasternak; R. D. Taylor; R. Jeanloz; S. R. Bohlen

Magnetic ordering transition in Mg_0.9Fe_0.1SiO₃ orthopyroxene

M. P. Pasternak, R. D. Taylor, R. Jeanloz, S. R. Bohlen

Los Alamos National Laboratory

Research output: Contribution to journal › Article › peer-review

16 Scopus citations

Abstract

Mossbauer spectroscopy of polycrystalline synthetic orthopyroxene of composition Mg_0.9 ⁵⁷Fe_0.1SiO₃ demonstrates that magnetic ordering sets in at temperatures below 5 (±2) K. The low Fe concentration of the sample implies that spin correlations must extend over unit-cell dimensions (~0.5 nm or more), and that magnetic ordering can contribute to the third-law entropies of Fe-poor minerals. -Authors

Original language	English
Pages (from-to)	901-903
Number of pages	3
Journal	American Mineralogist
Volume	77
Issue number	9-10
State	Published - 1992
Externally published	Yes

Cite this

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abstract = "Mossbauer spectroscopy of polycrystalline synthetic orthopyroxene of composition Mg0.9 57Fe0.1SiO3 demonstrates that magnetic ordering sets in at temperatures below 5 (±2) K. The low Fe concentration of the sample implies that spin correlations must extend over unit-cell dimensions (~0.5 nm or more), and that magnetic ordering can contribute to the third-law entropies of Fe-poor minerals. -Authors",

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AU - Pasternak, M. P.

AU - Taylor, R. D.

AU - Jeanloz, R.

AU - Bohlen, S. R.

PY - 1992

Y1 - 1992

N2 - Mossbauer spectroscopy of polycrystalline synthetic orthopyroxene of composition Mg0.9 57Fe0.1SiO3 demonstrates that magnetic ordering sets in at temperatures below 5 (±2) K. The low Fe concentration of the sample implies that spin correlations must extend over unit-cell dimensions (~0.5 nm or more), and that magnetic ordering can contribute to the third-law entropies of Fe-poor minerals. -Authors

AB - Mossbauer spectroscopy of polycrystalline synthetic orthopyroxene of composition Mg0.9 57Fe0.1SiO3 demonstrates that magnetic ordering sets in at temperatures below 5 (±2) K. The low Fe concentration of the sample implies that spin correlations must extend over unit-cell dimensions (~0.5 nm or more), and that magnetic ordering can contribute to the third-law entropies of Fe-poor minerals. -Authors

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Magnetic ordering transition in Mg_0.9Fe_0.1SiO₃ orthopyroxene

Abstract

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