Effects of morphotropic phase boundary on the electric, magnetic and optical properties of Sm/Ti co-doped BiFeO3 ceramics

Sohaib Ajmal; Huijiadai Luo; Liwei Zhang; Fangzhe Li; Jingxin Tian; Kaiyang Liu; Said Nasir Khisro; Hua Ke; Yu Zhou

doi:10.1016/j.ceramint.2025.06.063

Effects of morphotropic phase boundary on the electric, magnetic and optical properties of Sm/Ti co-doped BiFeO₃ ceramics

Sohaib Ajmal
, Huijiadai Luo
, Liwei Zhang^*
, Fangzhe Li
, Jingxin Tian
, Kaiyang Liu
, Said Nasir Khisro
, Hua Ke^*
, Yu Zhou^*

^*Corresponding author for this work

Harbin Institute of Technology
Harbin Institute of Technology
Harbin University of Science and Technology
University of Kotli
Harbin Institute of Technology (Shenzhen)

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

1 Scopus citations

Abstract

Bi_(1-x)Sm_xFe_0.97Ti_0.03O₃ (BSFO_x) ceramics formed a morphotropic phase boundary (MPB) consisting of polar rhombohedral (R3c) phase, an anti-polar orthorhombic (Pbam) bridging phase, and nonpolar orthorhombic (Pnma) phase within 0.125≤x≤0.175. The X-ray Rietveld refinement, the appearance of new Raman modes, and HRTEM analysis along with impedance spectroscopy confirmed the intricate phase coexistence. The higher fraction of the Pbam bridging phase in BSFO_{x = 0.15} ceramics facilitates the maximum remanent polarization (P_r = 40.24 μC/cm²) and magnetization (M_r = 0.272 emu/g) simultaneously. Interestingly, the optical bandgap (BG) in BSFO_x ceramics decreases from 2.05 eV to 1.63 eV, except for BSFO_{x = 0.15} ceramics, which experienced an abrupt increase in BG of 2.10 eV. The BSFO_x ceramics are active for second harmonic generation (SHG) with a response at ∼ 517 nm, and SHG intensity is positively related to the polar R3c phase. This work verifies the reliable strategy to enhance ferroelectric, magnetic, and optical properties by constructing MPB structures.

Original language	English
Pages (from-to)	38286-38298
Number of pages	13
Journal	Ceramics International
Volume	51
Issue number	23
DOIs	https://doi.org/10.1016/j.ceramint.2025.06.063
State	Published - Sep 2025

Keywords

Ferroelectric
Magnetic
Morphotropic phase boundary
Optical
Phase transition

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10.1016/j.ceramint.2025.06.063

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title = "Effects of morphotropic phase boundary on the electric, magnetic and optical properties of Sm/Ti co-doped BiFeO3 ceramics",

abstract = "Bi(1-x)SmxFe0.97Ti0.03O3 (BSFOx) ceramics formed a morphotropic phase boundary (MPB) consisting of polar rhombohedral (R3c) phase, an anti-polar orthorhombic (Pbam) bridging phase, and nonpolar orthorhombic (Pnma) phase within 0.125≤x≤0.175. The X-ray Rietveld refinement, the appearance of new Raman modes, and HRTEM analysis along with impedance spectroscopy confirmed the intricate phase coexistence. The higher fraction of the Pbam bridging phase in BSFOx = 0.15 ceramics facilitates the maximum remanent polarization (Pr = 40.24 μC/cm2) and magnetization (Mr = 0.272 emu/g) simultaneously. Interestingly, the optical bandgap (BG) in BSFOx ceramics decreases from 2.05 eV to 1.63 eV, except for BSFOx = 0.15 ceramics, which experienced an abrupt increase in BG of 2.10 eV. The BSFOx ceramics are active for second harmonic generation (SHG) with a response at ∼ 517 nm, and SHG intensity is positively related to the polar R3c phase. This work verifies the reliable strategy to enhance ferroelectric, magnetic, and optical properties by constructing MPB structures.",

keywords = "Ferroelectric, Magnetic, Morphotropic phase boundary, Optical, Phase transition",

author = "Sohaib Ajmal and Huijiadai Luo and Liwei Zhang and Fangzhe Li and Jingxin Tian and Kaiyang Liu and Khisro, \{Said Nasir\} and Hua Ke and Yu Zhou",

note = "Publisher Copyright: {\textcopyright} 2025 Elsevier Ltd and Techna Group S.r.l.",

year = "2025",

month = sep,

doi = "10.1016/j.ceramint.2025.06.063",

language = "英语",

volume = "51",

pages = "38286--38298",

journal = "Ceramics International",

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TY - JOUR

T1 - Effects of morphotropic phase boundary on the electric, magnetic and optical properties of Sm/Ti co-doped BiFeO3 ceramics

AU - Ajmal, Sohaib

AU - Luo, Huijiadai

AU - Zhang, Liwei

AU - Li, Fangzhe

AU - Tian, Jingxin

AU - Liu, Kaiyang

AU - Khisro, Said Nasir

AU - Ke, Hua

AU - Zhou, Yu

PY - 2025/9

Y1 - 2025/9

N2 - Bi(1-x)SmxFe0.97Ti0.03O3 (BSFOx) ceramics formed a morphotropic phase boundary (MPB) consisting of polar rhombohedral (R3c) phase, an anti-polar orthorhombic (Pbam) bridging phase, and nonpolar orthorhombic (Pnma) phase within 0.125≤x≤0.175. The X-ray Rietveld refinement, the appearance of new Raman modes, and HRTEM analysis along with impedance spectroscopy confirmed the intricate phase coexistence. The higher fraction of the Pbam bridging phase in BSFOx = 0.15 ceramics facilitates the maximum remanent polarization (Pr = 40.24 μC/cm2) and magnetization (Mr = 0.272 emu/g) simultaneously. Interestingly, the optical bandgap (BG) in BSFOx ceramics decreases from 2.05 eV to 1.63 eV, except for BSFOx = 0.15 ceramics, which experienced an abrupt increase in BG of 2.10 eV. The BSFOx ceramics are active for second harmonic generation (SHG) with a response at ∼ 517 nm, and SHG intensity is positively related to the polar R3c phase. This work verifies the reliable strategy to enhance ferroelectric, magnetic, and optical properties by constructing MPB structures.

AB - Bi(1-x)SmxFe0.97Ti0.03O3 (BSFOx) ceramics formed a morphotropic phase boundary (MPB) consisting of polar rhombohedral (R3c) phase, an anti-polar orthorhombic (Pbam) bridging phase, and nonpolar orthorhombic (Pnma) phase within 0.125≤x≤0.175. The X-ray Rietveld refinement, the appearance of new Raman modes, and HRTEM analysis along with impedance spectroscopy confirmed the intricate phase coexistence. The higher fraction of the Pbam bridging phase in BSFOx = 0.15 ceramics facilitates the maximum remanent polarization (Pr = 40.24 μC/cm2) and magnetization (Mr = 0.272 emu/g) simultaneously. Interestingly, the optical bandgap (BG) in BSFOx ceramics decreases from 2.05 eV to 1.63 eV, except for BSFOx = 0.15 ceramics, which experienced an abrupt increase in BG of 2.10 eV. The BSFOx ceramics are active for second harmonic generation (SHG) with a response at ∼ 517 nm, and SHG intensity is positively related to the polar R3c phase. This work verifies the reliable strategy to enhance ferroelectric, magnetic, and optical properties by constructing MPB structures.

KW - Ferroelectric

KW - Magnetic

KW - Morphotropic phase boundary

KW - Optical

KW - Phase transition

UR - https://www.scopus.com/pages/publications/105008409484

U2 - 10.1016/j.ceramint.2025.06.063

DO - 10.1016/j.ceramint.2025.06.063

M3 - 文章

AN - SCOPUS:105008409484

SN - 0272-8842

VL - 51

SP - 38286

EP - 38298

JO - Ceramics International

JF - Ceramics International

IS - 23

ER -

Effects of morphotropic phase boundary on the electric, magnetic and optical properties of Sm/Ti co-doped BiFeO₃ ceramics

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