Unveiling the Different Physical Origins of Magnetic Anisotropy and Magnetoelasticity in Ga-Rich FeGa Thin Films

Bartolomé, P. ; Begué, A. ; Muñoz-Noval, A. ; Ciria, M. (Universidad de Zaragoza) ; Ranchal, R.

Resumen: The aim of this work is to clarify how in-plane magnetic anisotropy and magnetoelasticity depend on the thickness of Ga-rich FeGa layers. Samples with an Fe72Ga28 composition were grown by sputtering in the ballistic regime in oblique incidence. Although for these growth conditions uniaxial magnetic anisotropy could be expected, in-plane anisotropy is only present when the sample thickness is above 100 nm. By means of differential X-ray absorption spectroscopy, we have determined the influence of both Ga pairs and tetragonal cell distortion on the evolution of the magnetic anisotropy with the increase of FeGa thickness. On the other hand, we have used the cantilever beam technique with capacitive detection to also determine the evolution of the magnetoelastic parameters with the thickness increase. In this case, experimental results can be understood considering the grain distribution. Therefore, the different physical origins for anisotropy and magnetoelasticity open up the possibility to independently tune these two characteristics in Ga-rich FeGa films.

Idioma: Inglés

DOI: 10.1021/acs.jpcc.9b10879

Año: 2020

Publicado en: Journal of physical chemistry. C. 124, 8 (2020), 4717-4722
ISSN: 1932-7447

Factor impacto JCR: 4.126 (2020)

Categ. JCR: CHEMISTRY, PHYSICAL rank: 68 / 162 = 0.42 (2020) - Q2 - T2
Categ. JCR: MATERIALS SCIENCE, MULTIDISCIPLINARY rank: 124 / 333 = 0.372 (2020) - Q2 - T2
Categ. JCR: NANOSCIENCE & NANOTECHNOLOGY rank: 56 / 106 = 0.528 (2020) - Q3 - T2

Factor impacto SCIMAGO: 1.401 - Electronic, Optical and Magnetic Materials (Q1) - Energy (miscellaneous) (Q1) - Surfaces, Coatings and Films (Q1) - Physical and Theoretical Chemistry (Q1) - Nanoscience and Nanotechnology (Q1)

Financiación: info:eu-repo/grantAgreement/ES/DGA/E10-17D
Financiación: info:eu-repo/grantAgreement/ES/MINECO/BES-2016-076482
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-66726-R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/MAT2015-66888-C3-3R
Financiación: info:eu-repo/grantAgreement/ES/MINECO/RTI2018-097895-B-C43

Tipo y forma: Article (PostPrint)

Área (Departamento): Área Física Materia Condensada (Dpto. Física Materia Condensa.)