Ferroelectricity and weak ferromagnetism of hexagonal ErFe O3 thin films

Hiroko Yokota, Tomoya Nozue, Shin Nakamura, Hajime Hojo, Mamoru Fukunaga, Pierre Eymeric Janolin, Jean Michel Kiat, Akio Fuwa

Research output: Contribution to journalArticle

10 Citations (Scopus)

Abstract

Hexagonal ErFeO3 thin films fabricated by a pulsed laser deposition method were investigated by x-ray diffraction (XRD) and transmission electron microscopy. No structural phase transition was observed between 20 and 900 K. Ferroelectric D-E hysteresis loops were obtained at room temperature using the double-wave method, and the magnitude of spontaneous polarization was determined to be 200nC/cm2. The existence of superlattice reflections in the XRD indicates that the space group of ErFeO3 thin film is the polar hexagonal P63cm. This result also supports the ferroelectricity at room temperature. Magnetic properties were examined by a superconducting quantum interference device and Mössbauer spectroscopy. Below the Néel temperature of 120 K (TN), a weak ferromagnetism appears along the c axis due to the canting of Fe3+ magnetic moments. Around TN, the imaginary part of dielectric constant shows an anomaly. These results prove h-ErFeO3 thin films to be multiferroic below 120 K.

Original languageEnglish
Article number054101
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume92
Issue number5
DOIs
Publication statusPublished - Aug 3 2015
Externally publishedYes

Fingerprint

Ferroelectricity
Ferromagnetism
ferroelectricity
ferromagnetism
Thin films
x ray diffraction
thin films
Diffraction
X rays
SQUIDs
room temperature
Pulsed laser deposition
Hysteresis loops
Magnetic moments
Temperature
Ferroelectric materials
pulsed laser deposition
Magnetic properties
Permittivity
magnetic moments

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Ferroelectricity and weak ferromagnetism of hexagonal ErFe O3 thin films. / Yokota, Hiroko; Nozue, Tomoya; Nakamura, Shin; Hojo, Hajime; Fukunaga, Mamoru; Janolin, Pierre Eymeric; Kiat, Jean Michel; Fuwa, Akio.

In: Physical Review B - Condensed Matter and Materials Physics, Vol. 92, No. 5, 054101, 03.08.2015.

Research output: Contribution to journalArticle

Yokota, Hiroko ; Nozue, Tomoya ; Nakamura, Shin ; Hojo, Hajime ; Fukunaga, Mamoru ; Janolin, Pierre Eymeric ; Kiat, Jean Michel ; Fuwa, Akio. / Ferroelectricity and weak ferromagnetism of hexagonal ErFe O3 thin films. In: Physical Review B - Condensed Matter and Materials Physics. 2015 ; Vol. 92, No. 5.
@article{317088e7f5694f90990ace2965e97cf1,
title = "Ferroelectricity and weak ferromagnetism of hexagonal ErFe O3 thin films",
abstract = "Hexagonal ErFeO3 thin films fabricated by a pulsed laser deposition method were investigated by x-ray diffraction (XRD) and transmission electron microscopy. No structural phase transition was observed between 20 and 900 K. Ferroelectric D-E hysteresis loops were obtained at room temperature using the double-wave method, and the magnitude of spontaneous polarization was determined to be 200nC/cm2. The existence of superlattice reflections in the XRD indicates that the space group of ErFeO3 thin film is the polar hexagonal P63cm. This result also supports the ferroelectricity at room temperature. Magnetic properties were examined by a superconducting quantum interference device and M{\"o}ssbauer spectroscopy. Below the N{\'e}el temperature of 120 K (TN), a weak ferromagnetism appears along the c axis due to the canting of Fe3+ magnetic moments. Around TN, the imaginary part of dielectric constant shows an anomaly. These results prove h-ErFeO3 thin films to be multiferroic below 120 K.",
author = "Hiroko Yokota and Tomoya Nozue and Shin Nakamura and Hajime Hojo and Mamoru Fukunaga and Janolin, {Pierre Eymeric} and Kiat, {Jean Michel} and Akio Fuwa",
year = "2015",
month = "8",
day = "3",
doi = "10.1103/PhysRevB.92.054101",
language = "English",
volume = "92",
journal = "Physical Review B - Condensed Matter and Materials Physics",
issn = "1098-0121",
publisher = "American Physical Society",
number = "5",

}

TY - JOUR

T1 - Ferroelectricity and weak ferromagnetism of hexagonal ErFe O3 thin films

AU - Yokota, Hiroko

AU - Nozue, Tomoya

AU - Nakamura, Shin

AU - Hojo, Hajime

AU - Fukunaga, Mamoru

AU - Janolin, Pierre Eymeric

AU - Kiat, Jean Michel

AU - Fuwa, Akio

PY - 2015/8/3

Y1 - 2015/8/3

N2 - Hexagonal ErFeO3 thin films fabricated by a pulsed laser deposition method were investigated by x-ray diffraction (XRD) and transmission electron microscopy. No structural phase transition was observed between 20 and 900 K. Ferroelectric D-E hysteresis loops were obtained at room temperature using the double-wave method, and the magnitude of spontaneous polarization was determined to be 200nC/cm2. The existence of superlattice reflections in the XRD indicates that the space group of ErFeO3 thin film is the polar hexagonal P63cm. This result also supports the ferroelectricity at room temperature. Magnetic properties were examined by a superconducting quantum interference device and Mössbauer spectroscopy. Below the Néel temperature of 120 K (TN), a weak ferromagnetism appears along the c axis due to the canting of Fe3+ magnetic moments. Around TN, the imaginary part of dielectric constant shows an anomaly. These results prove h-ErFeO3 thin films to be multiferroic below 120 K.

AB - Hexagonal ErFeO3 thin films fabricated by a pulsed laser deposition method were investigated by x-ray diffraction (XRD) and transmission electron microscopy. No structural phase transition was observed between 20 and 900 K. Ferroelectric D-E hysteresis loops were obtained at room temperature using the double-wave method, and the magnitude of spontaneous polarization was determined to be 200nC/cm2. The existence of superlattice reflections in the XRD indicates that the space group of ErFeO3 thin film is the polar hexagonal P63cm. This result also supports the ferroelectricity at room temperature. Magnetic properties were examined by a superconducting quantum interference device and Mössbauer spectroscopy. Below the Néel temperature of 120 K (TN), a weak ferromagnetism appears along the c axis due to the canting of Fe3+ magnetic moments. Around TN, the imaginary part of dielectric constant shows an anomaly. These results prove h-ErFeO3 thin films to be multiferroic below 120 K.

UR - http://www.scopus.com/inward/record.url?scp=84939856514&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84939856514&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.92.054101

DO - 10.1103/PhysRevB.92.054101

M3 - Article

AN - SCOPUS:84939856514

VL - 92

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

SN - 1098-0121

IS - 5

M1 - 054101

ER -