Thickness-dependent magnetism and spin-glass behaviors in compressively strained BiFeO3 thin films

Ching Jung Cheng; Chengliang Lu; Zuhuang Chen; Lu You; Lang Chen; Junling Wang; Tom Wu

doi:10.1063/1.3600064

Thickness-dependent magnetism and spin-glass behaviors in compressively strained BiFeO₃ thin films

Ching Jung Cheng^*, Chengliang Lu, Zuhuang Chen, Lu You, Lang Chen, Junling Wang, Tom Wu

^*Corresponding author for this work

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

77 Scopus citations

Abstract

Compressively strained BiFeO₃ (BFO) films from 19 to 114 nm are epitaxially grown on LaAlO₃ substrates, and their thickness-dependent evolutions of structural and magnetic properties are investigated. Across the morphotropic phase boundary, complex strain relaxation behaviors involving low-symmetry intermediate/bridging phases are observed. The fully strained 38 nm BFO film exhibits a saturation magnetization of ∼28 emu/cm³ at 300 K with a coercivity of 130 Oe while all films show a spin-glass behavior. These findings suggest that tailoring film thickness is effective to suppress the cycloidal magnetic modulation in BFO, leading to magnetic properties different from the bulk counterpart.

Original language	English (US)
Article number	242502
Journal	Applied Physics Letters
Volume	98
Issue number	24
DOIs	https://doi.org/10.1063/1.3600064
State	Published - Jun 13 2011
Externally published	Yes

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

Access to Document

10.1063/1.3600064

Cite this

@article{a92ed0c505b84b53bd882626c9f52e86,

title = "Thickness-dependent magnetism and spin-glass behaviors in compressively strained BiFeO3 thin films",

abstract = "Compressively strained BiFeO3 (BFO) films from 19 to 114 nm are epitaxially grown on LaAlO3 substrates, and their thickness-dependent evolutions of structural and magnetic properties are investigated. Across the morphotropic phase boundary, complex strain relaxation behaviors involving low-symmetry intermediate/bridging phases are observed. The fully strained 38 nm BFO film exhibits a saturation magnetization of ∼28 emu/cm3 at 300 K with a coercivity of 130 Oe while all films show a spin-glass behavior. These findings suggest that tailoring film thickness is effective to suppress the cycloidal magnetic modulation in BFO, leading to magnetic properties different from the bulk counterpart.",

author = "Cheng, {Ching Jung} and Chengliang Lu and Zuhuang Chen and Lu You and Lang Chen and Junling Wang and Tom Wu",

year = "2011",

month = jun,

day = "13",

doi = "10.1063/1.3600064",

language = "English (US)",

volume = "98",

journal = "Applied Physics Letters",

issn = "0003-6951",

publisher = "AMER INST PHYSICS",

number = "24",

}

TY - JOUR

T1 - Thickness-dependent magnetism and spin-glass behaviors in compressively strained BiFeO3 thin films

AU - Cheng, Ching Jung

AU - Lu, Chengliang

AU - Chen, Zuhuang

AU - You, Lu

AU - Chen, Lang

AU - Wang, Junling

AU - Wu, Tom

PY - 2011/6/13

Y1 - 2011/6/13

N2 - Compressively strained BiFeO3 (BFO) films from 19 to 114 nm are epitaxially grown on LaAlO3 substrates, and their thickness-dependent evolutions of structural and magnetic properties are investigated. Across the morphotropic phase boundary, complex strain relaxation behaviors involving low-symmetry intermediate/bridging phases are observed. The fully strained 38 nm BFO film exhibits a saturation magnetization of ∼28 emu/cm3 at 300 K with a coercivity of 130 Oe while all films show a spin-glass behavior. These findings suggest that tailoring film thickness is effective to suppress the cycloidal magnetic modulation in BFO, leading to magnetic properties different from the bulk counterpart.

AB - Compressively strained BiFeO3 (BFO) films from 19 to 114 nm are epitaxially grown on LaAlO3 substrates, and their thickness-dependent evolutions of structural and magnetic properties are investigated. Across the morphotropic phase boundary, complex strain relaxation behaviors involving low-symmetry intermediate/bridging phases are observed. The fully strained 38 nm BFO film exhibits a saturation magnetization of ∼28 emu/cm3 at 300 K with a coercivity of 130 Oe while all films show a spin-glass behavior. These findings suggest that tailoring film thickness is effective to suppress the cycloidal magnetic modulation in BFO, leading to magnetic properties different from the bulk counterpart.

UR - http://www.scopus.com/inward/record.url?scp=79960593932&partnerID=8YFLogxK

U2 - 10.1063/1.3600064

DO - 10.1063/1.3600064

M3 - Article

AN - SCOPUS:79960593932

SN - 0003-6951

VL - 98

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 24

M1 - 242502

ER -

Thickness-dependent magnetism and spin-glass behaviors in compressively strained BiFeO₃ thin films

Abstract

ASJC Scopus subject areas

Access to Document

Other files and links

Fingerprint

Cite this