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Role of 4 f electrons in crystallographic and magnetic complexity

TitleRole of 4 f electrons in crystallographic and magnetic complexity
Publication TypeJournal Article
Year of Publication2017
AuthorsPathak, AK, Paudyal, D, Mudryk, Y, Pecharsky, VK
JournalPhysical Review B
Date Published08
Type of ArticleArticle
ISBN Number2469-9950
Accession NumberWOS:000407264600004
Keywordsearth, physics, systems, transition

demonstrate that the competition between 4 f-electron energy landscapes of Dy (4 f(9)) and Er (4 f(11)) is the key element of the puzzle required to explain complex interplay ofmagnetic and structural features observed in Er1-x Dy-x Co-2, and likely many other mixed lanthanide systems. Unlike the parent binaries-DyCo2 and ErCo2-Er1-x Dy-x Co-2 exhibits two successive magnetostructural transitions: a first order at T-C, followed by a second order in the ferrimagnetically ordered state. Supported by first-principles calculations, our results offer new opportunities for targeted design of magnetic materials with multiple functionalities, and also provide a critical insight into the role of 4f electrons in controlling the magnetism and structure of lanthanide intermetallics.

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