Materials Chemistry Frontiers
·
2025
·
IF 6.4
Yapeng Dong,Yuning Liang,Bo Gao,Qun Xu
Exploring advanced technology to obtain quantum materials presenting novel and unexpected electronic states upon proper manipulation is an important research endeavor. Usually, plastic deformation can lead to some amount of disruption that can result in new physical phenomena and fascinating structures. However, how to realize efficient plasticization and manipulation to obtain irreversible variation in such materials, especially those presenting quantum material behavior, is a great challenge. Herein, we show that upon plastic deformation induced by supercritical CO2 (SC CO2) on SrZrO3, typically at a pressure of 16 MPa, SrZrO3 experiences a transition from a bulk material to a two-dimensional (2D) structure. More importantly, it can be observed that the octahedral rotation of ZrO6 is suppressed. Furthermore, plastic deformation frequently induces magnetism in SrZrO3. Via polarization characterization, SrZrO3 displays multiferroic characteristics, exhibiting a considerable enhancement in the saturation magnetisation strength and polarization strength. At room temperature, SrZrO3 exhibits a saturated magnetisation of 0.1280 emu g−1, accompanied by a polarization of 0.27 μC cm−2. Therefore, this work demonstrates that plastically deformed SrTiO3 induced by SC CO2 can successfully transition into a quantum multiferroic material. These results establish a new method toward plastic deformation for the manipulation of the electronic properties of quantum materials.
研究领域:
材料科学
·
凝聚态物理
·
量子物理
✓ 已验证
产品关联
DOI
高影响因子
International Journal of Applied Ceramic Technology
·
2024
·
IF 1.8
Juan Liu,Yu Sun,Lilin Xiang,TuLai Sun,Zilong Yu,Bing Cui,Chuangui Jin
In the present study, SrTiO 3 was selected to enhance the multiferroic characteristics of Bi 0.88 Sm 0.12 FeO 3 (BSF) ceramics. With increasing SrTiO 3 content, the principal phase of BSF ceramic transitions from rhombohedral R3c to Pna2 1 . Through DSC and dielectric analysis, it was observed that both the Curie temperature and Néel temperature decreased proportionally with the augmentation of SrTiO 3 content. When x = .1, the optimal ferroelectric performance is achieved, and the highest remanent polarization value is 55.47 µC/cm 2 , significantly surpassing that of BSF ceramics. Moreover, the PFM test results showed that as the substitution content increased, the domains in the BSF ceramic gradually transformed from normal ferroelectric domains to polar nanomicro-domains. Magnetic and magnetoelectric results show that when x = .1, the best magnetic properties are obtained, M r = 59.7 emu/mol. The magnetoelectric coefficient α ME initially increased and then decreased with the increasing SrTiO 3 content, reaching its optimum magnetoelectric properties at x = .1, where α ME = .47 mV cm –1 Oe –1 . In summary, when the substitution amount of SrTiO 3 reaches 10%, the ferroelectric, magnetic, and magnetoelectric properties of BSF ceramics are significantly improved.
研究领域:
材料科学
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物理学
✓ 已验证
DOI
高影响因子
Journal of Materials Chemistry C
·
2015
·Vol. 3
·期 13
·3121-3127
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IF 4.696
Songping Wu,Yichao Lv,Mingjia Lu,Zhiqun Lin
Multiferroic ErMn2O5 nanorods have been synthesized via a surfactant-templated hydrothermal route. An environmentally friendly natural surfactant (Arabic gum) has been utilized as a template to prepare ErMn2O5 nanorods with a controllable morphology and size (i.e., nanorods with various lengths and basically invariable diameter). ErMn2O5 nanorods show strong size-dependent magnetic properties that correlate with: (a) a critical length for magnetization, and (b) recognizable divagation between FC and ZFC curves at low temperature. The former could be ascribed to the competition between surface strain and uncompensated spin at the surface, and the latter to Er antiferromagnetic ordering.
研究领域:
材料科学
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环境科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2017
·
IF 2.986
Yanhong Gu,Jianguo Zhao,Weiying Zhang,Haiwu Zheng,Laimei Liu,Wanping Chen
Sm and Ti co-doped BiFeO 3 (BFO) ceramics with Fe vacancies—Bi 0.86 Sm 0.14 FeO 3 , Bi 0.86 Sm 0.14 Fe 0.99 Ti 0.01 O 3 , and Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 —were prepared by a solid-state method using a rapid liquid process. X-ray diffraction indicated that all samples exhibited a rhombohedral structure with a minor secondary phase. The structural transformation from a rhombohedral (space group: R 3 c ) to orthorhombic structure (space group: Pnma ) was observed in the sample of Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 , which was also confirmed by Raman scattering spectra. Microstructural investigations with scanning electron microscopy showed a reduction in grain size with doping of BFO. The dielectric loss of Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 reaches 0.05 (at 100 Hz) owing to the introduction of Ti and Fe vacancies. Ferroelectromagnetic measurements revealed the existence of ferroelectricity with a remanent polarization of 0.24 µC/cm 2 in Bi 0.86 Sm 0.14 FeO 3 , paraelectricity in Bi 0.86 Sm 0.14 Fe 0.9 Ti 0.05 O 3 , and weak ferromagnetism with a remanent magnetization of 0.2 emu/g in Bi 0.86 Sm 0.14 Fe 0.99 Ti 0.01 O 3 . The two composition-driven phases exist simultaneously and the different coercive field might be related to the jumps in the ferromagnetic hysteresis loops. Both the ferroelectric and magnetic properties were shown to correlate with the composition-driven structural evolution.
研究领域:
材料科学
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物理学
✓ 已验证
DOI
高影响因子
Journal of Materiomics
·
2021
·
IF 6.425
Jing Chen,Nan Su,Xiao Li Zhu,Xiao Qiang Liu,Jin-Xing Zhang,Xiang Ming Chen
BiFeO 3 has been recognized as one of the most important room-temperature single-phase multiferroic materials, but it still suffers from several drawbacks especially the weak magnetoelectric coupling. In the present work, the electric-field-controlled magnetism is achieved in Bi 1-x Gd x FeO 3 system, which involves a field-induced transition of Pna 2 1 / R 3 c at the morphotropic phase boundary region, and the magnetic state is switched between cycloidal state and canted antiferromagnetic state. The electric-field-controlled magnetism becomes reversible with the help of annealing, which is confirmed by magnetic hysteresis loops and the quantitative ratio of the involved phases for the as-sintered, as-poled and as-annealed samples. Compared with the systems of Bi 1-x Nd x FeO 3 and Bi 1-x Sm x FeO 3 , it is easier to tune the symmetry from R 3 c to Pna 2 1 with lower rare earth-content, and the field-induced transition is more apparent and subsequently leads to more significant electric-field-controlled magnetism in a wider composition range.
研究领域:
材料科学
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物理学
✓ 已验证
DOI
高影响因子
Materials Research Express
·
2020
·Vol. 7
·期 4
·046102
·
IF 1.929
Sujian You,Bin Zhang
This study demonstrates the effect of Cobalt substitution on the structure, ferroelectric, and magnetic properties of BiFeO3 (BFO) nanofibers. The BiFe1−xCoxO3 (x = 0, 0.05, 0.1) nanofibers were successfully synthesized by a sol-gel based electrospinning method followed by thermal treatment. The BiFe1−xCoxO3 nanofibers prepared under optimized conditions are a polycrystalline fiber that presents a rhombohedral distorted perovskite structure with a little amount impurity phase. Room temperature polarization and magnetization results indicated the multiferroic behavior of the nanofibers. Especially, the remnant magnetization is increased from 0.18 emu g−1 to 1.72 emu g−1 on increasing amount of Co substitution. The improvement of magnetism can be attributed to the Cobalt doping and size-effect.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2019
·
IF 4.175
Aditya Jain,Y.G. Wang,N. Wang,Y. Li,F.L. Wang
In order to improve the multiferroic characteristics of BaTiO 3 based composites, diphasic magnetoelectric composites of (1- x )Ba 0.83 Ca 0.10 Sr 0.07 TiO 3 -( x )BaFe 12 O 19 ( x = 0–0.30) were systematically investigated. A cheap and commercially viable modified mechano-chemical activation technique has been used for the synthesis of materials. The dielectric , ferroelectric and piezoelectric characteristics of composites are slightly degraded with substitution, which may be ascribed to non-ferroelectric nature of BaFe 12 O 19 compared to Ba 0.83 Sr 0.07 Ca 0.10 TiO 3 . However, there is a significant improvement in the magnetic properties of the composites. The composites have demonstrated a classical ferrimagnetic behavior, which is mainly attributed to the presence of BaFe 12 O 19 phase. The magnetoelectric response of the composites has also shown a substantial improvement compared to pristine Ba 0.83 Sr 0.07 Ca 0.10 TiO 3 sample, which is non-magnetic in nature and therefore, do not possess any magnetoelectric characteristics. A dielectric constant of 6435 and maximum magnetoelectric constant of 4.79 mV/cm Oe has been obtained for the sample with concentration x = 0.30. The main objective of this work is to design a composite system with improved multiferroic and magnetoelectric properties and therefore, the obtained electrical properties of composites are still appreciable considering a progressive improvement in magnetic properties with BaFe 12 O 19 substitution. A large value of dielectric constant combined with moderate magnetic characteristics of these composites can provide a potential application in related electronic devices.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
CERAMICS INTERNATIONAL
·
2019
·
IF 3.45
S.D. Zhou,Y.G. Wang,Y. Li,H. Wu,L. Zhu
The ternary (1− x )(0.8BiFeO 3- 0.2BaTiO 3 )- x K 0.5 Na 0.5 NbO 3 (0 ≤ x ≤ 0.5) solid solutions have been successfully synthesized by a solid-state reaction route. X-ray diffraction and Rietveld refinement studies reveal the phase transition from the rhombohedral and tetragonal phases to the single tetragonal phase with x increasing. The average grain size decreases initially and then increases as x increases, whereas the remnant magnetization shows an opposite trend and reaches the maximum value of ~2.09 emu/g at x = 0.3. An enhanced remnant polarization of ~8.6 μC/cm 2 appears at x = 0.3 due to the structure distortion and the decrement of defects. Moreover, the remanent polarization and the relative permittivity reach the maximum value of ~20.14 μC/cm 2 (10 Hz) and ~644 (1 kHz) at x = 0.5, respectively, and the corresponding dielectric loss decreases to the lowest value of ~0.022 (1 kHz). These results indicate that the properties of ternary BFO-BTO-KNN solid solutions can be modulated by adjusting the K 0.5 Na 0.5 NbO 3 content to adapt to different application needs.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2025
·
IF 6.3
Yong Zhou,Jiamei Liu,Xudong Zhao,Bin Yang,Bing Li,Xiaoyang Liu
Because of their unique electrical and magnetic properties, the perovskite multiferroic materials exhibit significant potential in spintronic device applications. However, synthesizing room-temperature multiferroic materials with robust magneto-electric coupling effects remains a major challenge. In this work, Yb 3 + , with an ionic radius slightly smaller than Y 3+ , was selected for A -site doping in the h -YMnO 3 , which has a high ferroelectric transition temperature (T C ∼ 900 K) and a low antiferromagnetic transition temperature (T N ≤ 70 K). This similar ionic radius allows Yb to substitute the Y site effectively while introducing distinct electronic states, thereby optimizing the structure and multiferroic properties of h -YMnO 3 without significantly altering the crystal structure. A series of Yb-doped Y 1- x Yb x MnO 3 ( x = 0, 0.1, 0.2, 0.3, 0.4, 0.5 and 1) materials were synthesized via conventional solid-phase reaction. The effects of Yb doping on the structure, magnetism, and ferroelectricity of h -YMnO 3 were studied. X-ray diffraction (XRD) and corresponding XRD refining results show that as Y 3+ is replaced by Yb 3+ with smaller radii, the cell parameters and cell volume of Y 1- x Yb x MnO 3 decrease, the cell is compressed, and the lattice structure of Y 0.5 Yb 0.5 MnO 3 obtained under the condition of Yb semi-doping changes significantly. Subsequent magnetic and room-temperature ferroelectric test results show that the Y 1- x Yb x MnO 3 series samples have anti-ferromagnetic ground states. In particular, the proper inclination of Mn 3+ ions in the double perovskite structure of Y 0.5 Yb 0.5 MnO 3 generates strong Dzyaloshinskii-Moriya (DM) interactions, resulting in relatively strong antiferromagnetism. The antiferromagnetic Neel temperature (T N ) from 37 K to 41 K. Yb 3+ -induced inclined ferroelectricity enables Y 0.8 Yb 0.2 MnO 3 to achieve the highest ferroelectric polarization of 0.030 µC cm −2 , which is 180 % greater than that of h -YMnO 3 . The results demonstrate that Yb doping plays a crucial role in regulating the structure and multiferroic properties of h -YMnO 3 , offering a novel strategy for developing room-temperature multiferroic materials with robust magneto-electric coupling.
研究领域:
材料科学
·
凝聚态物理
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2024
·
IF 5.8
Yu Sun,Juan Liu,Tulai Sun,Zilong Yu,Ziyang Zheng,Mengru Ge,Lihong Bai
In this study, multiple rare earth elements were introduced to modify the multiferroic properties of BiFeO 3 . The effects of co-substitution on the structural evolution and properties were thoroughly investigated. With increasing substitution content, the ceramics underwent a symmetry transition from R 3 c to Pna 2 1 and finally to Pbnm . Co-substitution significantly enhanced the ferroelectric properties, with the highest remanent polarization of 33.14 μC/cm² observed at x = 0.10. Due to the symmetry evolution, ferromagnetism was released from the cycloidal spin structure, and the hysteresis loop gradually saturated, with the highest remanent magnetization ( M r ) of 0.25 emu/g observed at x = 0.16. The concurrent improvement in ferroelectricity and ferromagnetism resulted in substantial magnetoelectric coupling performance, with α ME = 3.50 mV/(cm·Oe). Moreover, direct current poling significantly induced the reverse transition from R 3 c to Pna 2 1 , indicating the potential for electrically controlled magnetism. This study provides a new perspective for modifying the magnetoelectric properties of BiFeO 3 .
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
·
2022
·Vol. 33
·期 19
·15520-15532
·
IF 2.779
Zhang Xiaoyan,Yang Xu,Wang Zhaopeng,Pan Qi,Chu Baojin,Zuo Ruzhong
Our previous work proposed that except for ferromagnetic and piezoelectric properties, mechanical quality factor is also an important parameter for high magnetoelectric response of BiFeO 3 -based multiferroic ceramics. In this work, in order to improve the mechanical quality factor of BiFeO 3 -based ceramics and obtain higher magnetoelectric response, we use Mn as a dopant and prepare 0.75BiFe 1− x Mn x O 3 -0.25BaTiO 3 ( x = 0, 0.0025, 0.005, 0.0075, 0.01) ceramics. The dielectric, piezoelectric, magnetic, and magnetoelectric properties of the ceramics with different Mn doping levels and different sintering temperatures are studied comprehensively. We find that the piezoelectric response, mechanical quality factor, ferromagnetic property, and magnetoelectric response can be improved by optimization of the composition and sintering temperature of the ceramics. A large magnetoelectric coefficient α E \(\sim\) 2 V/(cm Oe) is achieved at resonant frequency when doping content of Mn is 0.75 mol% and sintering temperature is 1030 \(\mathrm{^\circ{\rm C} }\) . Such high value of α E is attributed to the combined effect of improved mechanical quality factor, high piezoelectric coefficient, and enhanced ferromagnetism. It is among the largest α E values obtained in single-phase BiFeO 3 -based ceramics. Moreover, our work further verifies the mechanical quality factor is an important parameter to achieve a high magnetoelectric response in BiFeO 3 -based ceramics.
研究领域:
材料科学
·
物理学
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF ALLOYS AND COMPOUNDS
·
2023
·
IF 6.2
Zhao Wang,Wenyue Zhao,Ze Li,Yazhou Peng,Chang Gao,Lei Shi,Wenjing Hua,Weidong Fei,Yu Zhao
The search for multiferroic materials with ferroelectric and ferromagnetic properties at room temperature continues to be driven by the prospect of new devices. In this paper, Ba 2+ -Ti 4+ co-doped Y 1- x (Ba 0.5 Ti 0.5 ) x FeO 3 were prepared by a traditional solid-state reaction method. The ferroelectricity and ferromagnetism of the co-doped ceramics have been enhanced simultaneously with the maximum polarization of 0.48 μC/cm 2 and the maximum magnetization of 3.25 emu/g, the switched charge density (0.26 μC/cm 2 ) measured by PUND tests indicating the intrinsic and switchable remanent polarization. The increase of Fe 2+ content (increased to 28 % with the increase of doping content) caused by Ba 2+ -Ti 4+ co-doping destroys the antiferromagnetic ground state, and the doping strategy enlarges the tilt angle of oxygen octahedron from 144.93° to 148.63°. The magnetic domain switches caused by the external electric field were directly observed by magnetic force microscopy, indicating the modulation of magnetic domain by polarization at room temperature. This work may provide useful information for the structural design and performance improvement of multiferroic materials.
研究领域:
材料科学
·
物理学
✓ 已验证
DOI
高影响因子
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