Structural, vibrational, and enhanced magneto-electric coupling in Ho-substituted BiFeO3

Muniyandi Muneeswaran; Seung Hoon Lee; Dong Hun Kim; Beon Sung Jung; Seo Hyoung Chang; Jae Won Jang; Byung Chun Choi; Jung Hyun Jeong; N. V. Giridharan; C. Venkateswaran

doi:10.1016/j.jallcom.2018.03.365

Structural, vibrational, and enhanced magneto-electric coupling in Ho-substituted BiFeO₃

Muniyandi Muneeswaran, Seung Hoon Lee, Dong Hun Kim, Beon Sung Jung, Seo Hyoung Chang, Jae Won Jang, Byung Chun Choi, Jung Hyun Jeong, N. V. Giridharan, C. Venkateswaran

Geochemistry & Interfacial Science

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

35 Scopus citations

Abstract

The effect of Holmium (Ho) substitution in BiFeO₃ [Bi_1-xHo_xFeO₃ (x = 0.00, 0.05, 0.10, 0.15, 0.18, and 0.20)] ceramics is reported. The X-ray diffraction study shows composition-driven rhombohedral-to-orthorhombic (R3c to Pnma) phase transition for Bi_1-xHo_xFeO₃ (x = 0.15, 0.18, and 0.20) which is confirmed by Reitveld refinement. Raman spectra of Bi_1-xHo_xFeO₃ (x = 0.00, 0.05, and 0.10) belong to the rhombohedral (R3c) structure. Further increasing the Ho³⁺ concentration in a BiFeO₃ (BFO) system revealed that Raman modes of Bi_1-xHo_xFeO₃ (x = 0.15, 0.18 and 0.20) were assigned to an orthorhombic (pnma) structure, which is confirmed by the Rietveld analysis of X-ray diffraction data and TEM analysis. Ferroelectric studies show that the remnant polarization (P_r) gradually decreases for Bi_1-xHo_xFeO₃ (x = 0.15, 0.18, and 0.20), confirming the transformation from polar to non-polar systems. Magnetic measurement shows ferromagnetic behavior observed for Bi_1-xHo_xFeO₃ (x = 0.10 and 0.20) samples. Further, the magneto-electric coupling is measured in terms of magneto-capacitance of Ho³⁺-substituted BiFeO₃ samples.

Original language	English
Pages (from-to)	276-285
Number of pages	10
Journal	Journal of Alloys and Compounds
Volume	750
DOIs	https://doi.org/10.1016/j.jallcom.2018.03.365
State	Published - Jun 25 2018

Funding

This research was supported by the Basic Science Research Program through the National Research Foundation of Korea (NRF) funded by the Ministry of Science, ICT and Future Planning (No. 2015060315 ). The BiFeO 3 [Bi 1-x Ho x FeO 3 (x = 0.00, 0.05, 0.10, 0.15, 0.18, and 0.20)] ceramics were supplied by the Functional Phosphor Bank at Pukyong National University, South Korea.

Keywords

Magneto-electric coupling
Raman spectroscopy
Structural phase transition
X-ray diffraction

Access to Document

10.1016/j.jallcom.2018.03.365

Cite this

@article{786104f6a9c94d09a088ad0f5addece8,

title = "Structural, vibrational, and enhanced magneto-electric coupling in Ho-substituted BiFeO3",

abstract = "The effect of Holmium (Ho) substitution in BiFeO3 [Bi1-xHoxFeO3 (x = 0.00, 0.05, 0.10, 0.15, 0.18, and 0.20)] ceramics is reported. The X-ray diffraction study shows composition-driven rhombohedral-to-orthorhombic (R3c to Pnma) phase transition for Bi1-xHoxFeO3 (x = 0.15, 0.18, and 0.20) which is confirmed by Reitveld refinement. Raman spectra of Bi1-xHoxFeO3 (x = 0.00, 0.05, and 0.10) belong to the rhombohedral (R3c) structure. Further increasing the Ho3+ concentration in a BiFeO3 (BFO) system revealed that Raman modes of Bi1-xHoxFeO3 (x = 0.15, 0.18 and 0.20) were assigned to an orthorhombic (pnma) structure, which is confirmed by the Rietveld analysis of X-ray diffraction data and TEM analysis. Ferroelectric studies show that the remnant polarization (Pr) gradually decreases for Bi1-xHoxFeO3 (x = 0.15, 0.18, and 0.20), confirming the transformation from polar to non-polar systems. Magnetic measurement shows ferromagnetic behavior observed for Bi1-xHoxFeO3 (x = 0.10 and 0.20) samples. Further, the magneto-electric coupling is measured in terms of magneto-capacitance of Ho3+-substituted BiFeO3 samples.",

keywords = "Magneto-electric coupling, Raman spectroscopy, Structural phase transition, X-ray diffraction",

author = "Muniyandi Muneeswaran and Lee, {Seung Hoon} and Kim, {Dong Hun} and Jung, {Beon Sung} and Chang, {Seo Hyoung} and Jang, {Jae Won} and Choi, {Byung Chun} and Jeong, {Jung Hyun} and Giridharan, {N. V.} and C. Venkateswaran",

note = "Publisher Copyright: {\textcopyright} 2018 Elsevier B.V.",

year = "2018",

month = jun,

day = "25",

doi = "10.1016/j.jallcom.2018.03.365",

language = "English",

volume = "750",

pages = "276--285",

journal = "Journal of Alloys and Compounds",

issn = "0925-8388",

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TY - JOUR

T1 - Structural, vibrational, and enhanced magneto-electric coupling in Ho-substituted BiFeO3

AU - Muneeswaran, Muniyandi

AU - Lee, Seung Hoon

AU - Kim, Dong Hun

AU - Jung, Beon Sung

AU - Chang, Seo Hyoung

AU - Jang, Jae Won

AU - Choi, Byung Chun

AU - Jeong, Jung Hyun

AU - Giridharan, N. V.

AU - Venkateswaran, C.

PY - 2018/6/25

Y1 - 2018/6/25

N2 - The effect of Holmium (Ho) substitution in BiFeO3 [Bi1-xHoxFeO3 (x = 0.00, 0.05, 0.10, 0.15, 0.18, and 0.20)] ceramics is reported. The X-ray diffraction study shows composition-driven rhombohedral-to-orthorhombic (R3c to Pnma) phase transition for Bi1-xHoxFeO3 (x = 0.15, 0.18, and 0.20) which is confirmed by Reitveld refinement. Raman spectra of Bi1-xHoxFeO3 (x = 0.00, 0.05, and 0.10) belong to the rhombohedral (R3c) structure. Further increasing the Ho3+ concentration in a BiFeO3 (BFO) system revealed that Raman modes of Bi1-xHoxFeO3 (x = 0.15, 0.18 and 0.20) were assigned to an orthorhombic (pnma) structure, which is confirmed by the Rietveld analysis of X-ray diffraction data and TEM analysis. Ferroelectric studies show that the remnant polarization (Pr) gradually decreases for Bi1-xHoxFeO3 (x = 0.15, 0.18, and 0.20), confirming the transformation from polar to non-polar systems. Magnetic measurement shows ferromagnetic behavior observed for Bi1-xHoxFeO3 (x = 0.10 and 0.20) samples. Further, the magneto-electric coupling is measured in terms of magneto-capacitance of Ho3+-substituted BiFeO3 samples.

AB - The effect of Holmium (Ho) substitution in BiFeO3 [Bi1-xHoxFeO3 (x = 0.00, 0.05, 0.10, 0.15, 0.18, and 0.20)] ceramics is reported. The X-ray diffraction study shows composition-driven rhombohedral-to-orthorhombic (R3c to Pnma) phase transition for Bi1-xHoxFeO3 (x = 0.15, 0.18, and 0.20) which is confirmed by Reitveld refinement. Raman spectra of Bi1-xHoxFeO3 (x = 0.00, 0.05, and 0.10) belong to the rhombohedral (R3c) structure. Further increasing the Ho3+ concentration in a BiFeO3 (BFO) system revealed that Raman modes of Bi1-xHoxFeO3 (x = 0.15, 0.18 and 0.20) were assigned to an orthorhombic (pnma) structure, which is confirmed by the Rietveld analysis of X-ray diffraction data and TEM analysis. Ferroelectric studies show that the remnant polarization (Pr) gradually decreases for Bi1-xHoxFeO3 (x = 0.15, 0.18, and 0.20), confirming the transformation from polar to non-polar systems. Magnetic measurement shows ferromagnetic behavior observed for Bi1-xHoxFeO3 (x = 0.10 and 0.20) samples. Further, the magneto-electric coupling is measured in terms of magneto-capacitance of Ho3+-substituted BiFeO3 samples.

KW - Magneto-electric coupling

KW - Raman spectroscopy

KW - Structural phase transition

KW - X-ray diffraction

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U2 - 10.1016/j.jallcom.2018.03.365

DO - 10.1016/j.jallcom.2018.03.365

M3 - Article

AN - SCOPUS:85044957062

SN - 0925-8388

VL - 750

SP - 276

EP - 285

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

ER -