Comparison of the magnetic properties of Mn3Fe2Si3O12 as a crystalline garnet and as a glass

F. Alex Cevallos, Robert Joseph Cava

Research output: Contribution to journalArticle

Abstract

The crystalline garnet Mn3Fe2Si3O12 and an amorphous phase of the same nominal composition are synthesized at high pressure. The magnetic properties of the two forms are reported. Both phases order antiferromagnetically. The crystalline phase exhibits a Curie-Weiss theta of −37.2 K, with a sharp ordering transition at 12 K. The glassy phase exhibits a larger antiferromagnetic Curie-Weiss theta, of −89.7 K, with a broad ordering transition observed at 2.5 K. The amorphous phase shows a much higher degree of magnetic frustration than the crystalline phase; it exhibits spin-glass behavior and is determined to have an actual composition of Mn3Fe2Si3O13.

LanguageEnglish (US)
Pages510-514
Number of pages5
JournalJournal of Magnetism and Magnetic Materials
Volume469
DOIs
StatePublished - Jan 1 2019

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Garnets
garnets
Magnetic properties
magnetic properties
Crystalline materials
Glass
glass
frustration
spin glass
Spin glass
Chemical analysis

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title = "Comparison of the magnetic properties of Mn3Fe2Si3O12 as a crystalline garnet and as a glass",
abstract = "The crystalline garnet Mn3Fe2Si3O12 and an amorphous phase of the same nominal composition are synthesized at high pressure. The magnetic properties of the two forms are reported. Both phases order antiferromagnetically. The crystalline phase exhibits a Curie-Weiss theta of −37.2 K, with a sharp ordering transition at 12 K. The glassy phase exhibits a larger antiferromagnetic Curie-Weiss theta, of −89.7 K, with a broad ordering transition observed at 2.5 K. The amorphous phase shows a much higher degree of magnetic frustration than the crystalline phase; it exhibits spin-glass behavior and is determined to have an actual composition of Mn3Fe2Si3O13.",
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Comparison of the magnetic properties of Mn3Fe2Si3O12 as a crystalline garnet and as a glass. / Cevallos, F. Alex; Cava, Robert Joseph.

In: Journal of Magnetism and Magnetic Materials, Vol. 469, 01.01.2019, p. 510-514.

Research output: Contribution to journalArticle

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N2 - The crystalline garnet Mn3Fe2Si3O12 and an amorphous phase of the same nominal composition are synthesized at high pressure. The magnetic properties of the two forms are reported. Both phases order antiferromagnetically. The crystalline phase exhibits a Curie-Weiss theta of −37.2 K, with a sharp ordering transition at 12 K. The glassy phase exhibits a larger antiferromagnetic Curie-Weiss theta, of −89.7 K, with a broad ordering transition observed at 2.5 K. The amorphous phase shows a much higher degree of magnetic frustration than the crystalline phase; it exhibits spin-glass behavior and is determined to have an actual composition of Mn3Fe2Si3O13.

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