Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/242584
Type: Artigo
Title: Fragility of ferromagnetic double exchange interactions and pressure tuning of magnetism in 3d-5d double perovskite Sr2FeOsO6
Author: Veiga, L. S. I.
Fabbris, G.
van Veenendaal, M.
Souza-Neto, N. M.
Feng, H. L.
Yamaura, K.
Haskel, D.
Abstract: The ability to tune exchange (magnetic) interactions between 3d transition metals in perovskite structures has proven to be a powerful route to discovery of novel properties. Here we demonstrate that the introduction of 3d-5d exchange pathways in double perovskites enables additional tunability, a result of the large spatial extent of 5d wave functions. Using x-ray probes of magnetism and structure at high pressure, we show that compression of Sr2FeOsO6 drives an unexpected continuous change in the sign of Fe-Os exchange interactions and a transition from antiferromagnetic to ferrimagnetic order. We analyze the relevant electron-electron interactions, shedding light into fundamental differences with the more thoroughly studied 3d-3d systems.
The ability to tune exchange (magnetic) interactions between 3d transition metals in perovskite structures has proven to be a powerful route to discovery of novel properties. Here we demonstrate that the introduction of 3d-5d exchange pathways in double perovskites enables additional tunability, a result of the large spatial extent of 5d wave functions. Using x-ray probes of magnetism and structure at high pressure, we show that compression of Sr2FeOsO6 drives an unexpected continuous change in the sign of Fe-Os exchange interactions and a transition from antiferromagnetic to ferrimagnetic order. We analyze the relevant electron-electron interactions, shedding light into fundamental differences with the more thoroughly studied 3d-3d systems.
Subject: Perovskitas duplas
Estrôncio
Magnetismo
Country: Estados Unidos
Editor: American Physical Society
Citation: Fragility Of Ferromagnetic Double Exchange Interactions And Pressure Tuning Of Magnetism In 3d-5d Double Perovskite Sr2feoso6. Amer Physical Soc, v. 91, p. Jun-2015.
Rights: aberto
Identifier DOI: 10.1103/PhysRevB.91.235135
Address: https://journals.aps.org/prb/abstract/10.1103/PhysRevB.91.235135
Date Issue: 2015
Appears in Collections:IFGW - Artigos e Outros Documentos

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