Annealing temperature effect on ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO3 films

Hiroshi Naganuma; Jun Miura; Soichiro Okamura

doi:10.1007/s10832-007-9400-3

Annealing temperature effect on ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO₃ films

Hiroshi Naganuma, Jun Miura, Soichiro Okamura

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

12 Citations (Scopus)

Abstract

We fabricated 5 at.% Mn-added polycrystalline BiFeO₃ films and investigated the annealing temperature effect on structural, ferroelectric and magnetic properties. In the x-ray diffraction patterns, only the diffraction peaks due to the BiFeO₃ structure were observed and no secondary phase could be observed at annealing temperatures between 773 and 923 K. Adding Mn suppressed the leakage current density in the high electric field region when compared to pure BiFeO₃ films. The conduction mechanism of the Mn-added BiFeO₃ films was dominated by Ohmic conduction. Remanent polarization of the Mn-added polycrystalline BiFeO₃ films for an applied electric field of approximately 1.5 mV/cm was 63 μC/cm² for the specimen annealed at 773 K and 46 μC/cm² for the specimen annealed at 923 K, although the remanent polarization still exhibited a tendency to increase with an increase in the electric field. Spontaneous magnetization was obtained at high annealing specimens. This study revealed that the annealing temperature strongly affected the ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO₃ films. In addition, by optimizing the annealing temperature, we realized multiferroics coexistent with spontaneous magnetization and spontaneous polarization at room temperature in the Mn-added polycrystalline BiFeO₃ film.

Original language	English
Pages (from-to)	203-208
Number of pages	6
Journal	Journal of Electroceramics
Volume	22
Issue number	1-3
DOIs	https://doi.org/10.1007/s10832-007-9400-3
Publication status	Published - 2009 Feb
Externally published	Yes

Keywords

BiFeO
Ferroelectric property
Film
Magnetic property
Mn additive
Multiferroics

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Condensed Matter Physics
Mechanics of Materials
Electrical and Electronic Engineering
Materials Chemistry

Access to Document

10.1007/s10832-007-9400-3

Cite this

@article{b8527c1a6d764ce0b2de7027d2c69062,

title = "Annealing temperature effect on ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO3 films",

abstract = "We fabricated 5 at.% Mn-added polycrystalline BiFeO3 films and investigated the annealing temperature effect on structural, ferroelectric and magnetic properties. In the x-ray diffraction patterns, only the diffraction peaks due to the BiFeO3 structure were observed and no secondary phase could be observed at annealing temperatures between 773 and 923 K. Adding Mn suppressed the leakage current density in the high electric field region when compared to pure BiFeO3 films. The conduction mechanism of the Mn-added BiFeO3 films was dominated by Ohmic conduction. Remanent polarization of the Mn-added polycrystalline BiFeO3 films for an applied electric field of approximately 1.5 mV/cm was 63 μC/cm2 for the specimen annealed at 773 K and 46 μC/cm2 for the specimen annealed at 923 K, although the remanent polarization still exhibited a tendency to increase with an increase in the electric field. Spontaneous magnetization was obtained at high annealing specimens. This study revealed that the annealing temperature strongly affected the ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO3 films. In addition, by optimizing the annealing temperature, we realized multiferroics coexistent with spontaneous magnetization and spontaneous polarization at room temperature in the Mn-added polycrystalline BiFeO3 film.",

keywords = "BiFeO, Ferroelectric property, Film, Magnetic property, Mn additive, Multiferroics",

author = "Hiroshi Naganuma and Jun Miura and Soichiro Okamura",

note = "Funding Information: Acknowledgments We wish to express gratitude to Prof. Hiroshi Funakubo, Tokyo Institute of Technology for the ferroelectric measurements using the FCE-1A type ferroelectric tester produced by TOYO Corporation. We also express gratitude to Prof. Nobuyuki Hiratsuka, Saitama University for the magnetic measurements using the vibrating sample magnetometer. This study was partly funded by the Grant-in-Aid for Young Scientist [Start up program] (Grant No. 18860070) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and by the Sasakawa Scientific Research Grant from The Japan Society (Grant No. 19-216).",

year = "2009",

month = feb,

doi = "10.1007/s10832-007-9400-3",

language = "English",

volume = "22",

pages = "203--208",

journal = "Journal of Electroceramics",

issn = "1385-3449",

publisher = "Springer Netherlands",

number = "1-3",

}

TY - JOUR

T1 - Annealing temperature effect on ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO3 films

AU - Naganuma, Hiroshi

AU - Miura, Jun

AU - Okamura, Soichiro

N1 - Funding Information: Acknowledgments We wish to express gratitude to Prof. Hiroshi Funakubo, Tokyo Institute of Technology for the ferroelectric measurements using the FCE-1A type ferroelectric tester produced by TOYO Corporation. We also express gratitude to Prof. Nobuyuki Hiratsuka, Saitama University for the magnetic measurements using the vibrating sample magnetometer. This study was partly funded by the Grant-in-Aid for Young Scientist [Start up program] (Grant No. 18860070) from the Ministry of Education, Culture, Sports, Science and Technology of Japan, and by the Sasakawa Scientific Research Grant from The Japan Society (Grant No. 19-216).

PY - 2009/2

Y1 - 2009/2

N2 - We fabricated 5 at.% Mn-added polycrystalline BiFeO3 films and investigated the annealing temperature effect on structural, ferroelectric and magnetic properties. In the x-ray diffraction patterns, only the diffraction peaks due to the BiFeO3 structure were observed and no secondary phase could be observed at annealing temperatures between 773 and 923 K. Adding Mn suppressed the leakage current density in the high electric field region when compared to pure BiFeO3 films. The conduction mechanism of the Mn-added BiFeO3 films was dominated by Ohmic conduction. Remanent polarization of the Mn-added polycrystalline BiFeO3 films for an applied electric field of approximately 1.5 mV/cm was 63 μC/cm2 for the specimen annealed at 773 K and 46 μC/cm2 for the specimen annealed at 923 K, although the remanent polarization still exhibited a tendency to increase with an increase in the electric field. Spontaneous magnetization was obtained at high annealing specimens. This study revealed that the annealing temperature strongly affected the ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO3 films. In addition, by optimizing the annealing temperature, we realized multiferroics coexistent with spontaneous magnetization and spontaneous polarization at room temperature in the Mn-added polycrystalline BiFeO3 film.

AB - We fabricated 5 at.% Mn-added polycrystalline BiFeO3 films and investigated the annealing temperature effect on structural, ferroelectric and magnetic properties. In the x-ray diffraction patterns, only the diffraction peaks due to the BiFeO3 structure were observed and no secondary phase could be observed at annealing temperatures between 773 and 923 K. Adding Mn suppressed the leakage current density in the high electric field region when compared to pure BiFeO3 films. The conduction mechanism of the Mn-added BiFeO3 films was dominated by Ohmic conduction. Remanent polarization of the Mn-added polycrystalline BiFeO3 films for an applied electric field of approximately 1.5 mV/cm was 63 μC/cm2 for the specimen annealed at 773 K and 46 μC/cm2 for the specimen annealed at 923 K, although the remanent polarization still exhibited a tendency to increase with an increase in the electric field. Spontaneous magnetization was obtained at high annealing specimens. This study revealed that the annealing temperature strongly affected the ferroelectric and magnetic properties in Mn-added polycrystalline BiFeO3 films. In addition, by optimizing the annealing temperature, we realized multiferroics coexistent with spontaneous magnetization and spontaneous polarization at room temperature in the Mn-added polycrystalline BiFeO3 film.

KW - BiFeO

KW - Ferroelectric property

KW - Film

KW - Magnetic property

KW - Mn additive

KW - Multiferroics

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U2 - 10.1007/s10832-007-9400-3

DO - 10.1007/s10832-007-9400-3

M3 - Article

AN - SCOPUS:60649101887

VL - 22

SP - 203

EP - 208

JO - Journal of Electroceramics

JF - Journal of Electroceramics

SN - 1385-3449

IS - 1-3

ER -