The magnetization of epitaxial nanometric CoFe<inf>2</inf>O<inf>4</inf> (001) layers

F. Rigato; J. Geshev; V. Skumryev; J. Fontcuberta

doi:https://doi.org/10.1063/1.3267873

The magnetization of epitaxial nanometric CoFe<inf>2</inf>O<inf>4</inf> (001) layers

F. Rigato, J. Geshev, V. Skumryev, J. Fontcuberta

Research output: Contribution to journal › Article › Research › peer-review

60 Citations (Scopus)

Abstract

We have studied the magnetic anisotropy of nanometric CoFe 2O4 (CFO) thin films grown on (100) SrTiO3 (STO) substrates. It has been found that epitaxial substrate-induced compressive strain makes the normal-to-film axis harder than the in-plane directions. In agreement with some previous reports, the magnetization loops are found to display a characteristic shrinking at low fields. Detailed structural and microstructural analyses, together with a modeling of the magnetization loops, revealed that the microstructure of the films, namely, the coexistence of a continuous CFO and a distribution of pyramidal CFO huts emerging from the surface, are responsible for this peculiar feature. We argue that this behavior, which significantly impacts the magnetic properties, could be a general trend of spinel films grow on (001)STO substrates. © 2009 American Institute of Physics.

Original language	English
Article number	113924
Journal	Journal of Applied Physics
Volume	106
DOIs	https://doi.org/10.1063/1.3267873
Publication status	Published - 28 Dec 2009

Access to Document

https://doi.org/10.1063/1.3267873

Fingerprint Dive into the research topics of 'The magnetization of epitaxial nanometric CoFe<inf>2</inf>O<inf>4</inf> (001) layers'. Together they form a unique fingerprint.

Cite this

@article{f010e6b44db54b85a04442ccb7ef3706,

title = "The magnetization of epitaxial nanometric CoFe2O4 (001) layers",

abstract = "We have studied the magnetic anisotropy of nanometric CoFe 2O4 (CFO) thin films grown on (100) SrTiO3 (STO) substrates. It has been found that epitaxial substrate-induced compressive strain makes the normal-to-film axis harder than the in-plane directions. In agreement with some previous reports, the magnetization loops are found to display a characteristic shrinking at low fields. Detailed structural and microstructural analyses, together with a modeling of the magnetization loops, revealed that the microstructure of the films, namely, the coexistence of a continuous CFO and a distribution of pyramidal CFO huts emerging from the surface, are responsible for this peculiar feature. We argue that this behavior, which significantly impacts the magnetic properties, could be a general trend of spinel films grow on (001)STO substrates. {\textcopyright} 2009 American Institute of Physics.",

author = "F. Rigato and J. Geshev and V. Skumryev and J. Fontcuberta",

year = "2009",

month = dec,

day = "28",

doi = "https://doi.org/10.1063/1.3267873",

language = "English",

volume = "106",

}

TY - JOUR

T1 - The magnetization of epitaxial nanometric CoFe2O4 (001) layers

AU - Rigato, F.

AU - Geshev, J.

AU - Skumryev, V.

AU - Fontcuberta, J.

PY - 2009/12/28

Y1 - 2009/12/28

N2 - We have studied the magnetic anisotropy of nanometric CoFe 2O4 (CFO) thin films grown on (100) SrTiO3 (STO) substrates. It has been found that epitaxial substrate-induced compressive strain makes the normal-to-film axis harder than the in-plane directions. In agreement with some previous reports, the magnetization loops are found to display a characteristic shrinking at low fields. Detailed structural and microstructural analyses, together with a modeling of the magnetization loops, revealed that the microstructure of the films, namely, the coexistence of a continuous CFO and a distribution of pyramidal CFO huts emerging from the surface, are responsible for this peculiar feature. We argue that this behavior, which significantly impacts the magnetic properties, could be a general trend of spinel films grow on (001)STO substrates. © 2009 American Institute of Physics.

AB - We have studied the magnetic anisotropy of nanometric CoFe 2O4 (CFO) thin films grown on (100) SrTiO3 (STO) substrates. It has been found that epitaxial substrate-induced compressive strain makes the normal-to-film axis harder than the in-plane directions. In agreement with some previous reports, the magnetization loops are found to display a characteristic shrinking at low fields. Detailed structural and microstructural analyses, together with a modeling of the magnetization loops, revealed that the microstructure of the films, namely, the coexistence of a continuous CFO and a distribution of pyramidal CFO huts emerging from the surface, are responsible for this peculiar feature. We argue that this behavior, which significantly impacts the magnetic properties, could be a general trend of spinel films grow on (001)STO substrates. © 2009 American Institute of Physics.

U2 - https://doi.org/10.1063/1.3267873

DO - https://doi.org/10.1063/1.3267873

M3 - Article

VL - 106

M1 - 113924

ER -