Tuning the Néel temperature in an antiferromagnet

We show that it is possible to tune the Néel temperature of nickel(II)-cobalt(II) oxide films by changing the Ni to Co ratio. We grow single crystalline micrometric triangular islands with tens of nanometers thickness on a Ru(0001) substrate using high temperature oxygen-assisted molecular beam epit...

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Detalles Bibliográficos
Autores: Mandziak, Anna|||0000-0001-7033-7862, D. Soria, Guiomar, Prieto, José Emilio|||0000-0003-2092-6364, Prieto Recio, Pilar|||0000-0001-8978-5139, Granados-Miralles, Cecilia|||0000-0002-3679-387X, Quesada, Adrian, Foerster, Michael|||0000-0002-4147-6668, Aballe, Lucía|||0000-0003-1810-8768, de la Figuera, Juan
Tipo de recurso: artículo
Fecha de publicación:2019
País:España
Institución:Universitat Autònoma de Barcelona
Repositorio:Dipòsit Digital de Documents de la UAB
Idioma:inglés
OAI Identifier:oai:ddd.uab.cat:253342
Acceso en línea:https://ddd.uab.cat/record/253342
https://dx.doi.org/urn:doi:10.1038/s41598-019-49642-8
Access Level:acceso abierto
Palabra clave:Magnetic properties and materials
Information storage
Structural properties
Surfaces, interfaces and thin films
Descripción
Sumario:We show that it is possible to tune the Néel temperature of nickel(II)-cobalt(II) oxide films by changing the Ni to Co ratio. We grow single crystalline micrometric triangular islands with tens of nanometers thickness on a Ru(0001) substrate using high temperature oxygen-assisted molecular beam epitaxy. Composition is controlled by adjusting the deposition rates of Co and Ni. The morphology, shape, crystal structure and composition are determined by low-energy electron microscopy and diffraction, and synchrotron-based x-ray absorption spectromicroscopy. The antiferromagnetic order is observed by x-ray magnetic linear dichroism. Antiferromagnetic domains up to micrometer width are observed.

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