Journal of Superconductivity and Novel Magnetism最新文献_第2页

Magnetic Gear System Analysis with Bulk Superconductor Modelling on Rotor Sections via Pulsed Field Magnetization 基于脉冲磁场磁化转子截面体超导体模型的磁齿轮系统分析

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-04-11 DOI: 10.1007/s10948-026-07173-0

Emre Akyerden, Ahmet Cansız

{"title":"Magnetic Gear System Analysis with Bulk Superconductor Modelling on Rotor Sections via Pulsed Field Magnetization","authors":"Emre Akyerden, Ahmet Cansız","doi":"10.1007/s10948-026-07173-0","DOIUrl":"10.1007/s10948-026-07173-0","url":null,"abstract":"<div>\u0000 \u0000 Industrial developments and increasing trend on global energy demand have intensified efforts to improve efficiency across all sectors. In this respect, mechanical gear systems play a central role in applications requiring high torque density and reliability. However, conventional mechanical gears have limitations due to friction losses, low reliability under high loads, and maintenance requirements. Magnetic gears, which can replace mechanical gears, may have potential to offer a non-contact and highly durable alternative. To further increase torque density and reduce losses, recent researches have focused on integrating superconductors into magnetic gear systems. This study presents a comprehensive analysis of a magnetic gear using bulk superconductor, which is magnetized by the pulsed field magnetization technique. Finite element simulations were conducted to evaluate the relationship between torque generation and alternating current losses of the superconducting magnetic gear under various pulsating conditions. To systematically investigate these interrelated performance factors, a derivative-free optimization algorithm was implemented that enables efficient evaluation of design trade-offs in the superconducting regime. The 20/-8 gear ratio optimization yielded a peak torque increase exceeding 100 times and an average torque increase of up to 34 times. These gains significantly exceed the limited 4- to 6-fold increase in losses, confirming the high efficiency of the proposed method.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-04-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147642967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Unveiling Pressure-Induced Superconductivity in Radium Hydrides: A First-Principles Approach 揭示镭氢化物的压力诱导超导性：第一原理方法

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-04-10 DOI: 10.1007/s10948-026-07171-2

Abdelkader Menad, Mohamed Ferhat

{"title":"Unveiling Pressure-Induced Superconductivity in Radium Hydrides: A First-Principles Approach","authors":"Abdelkader Menad, Mohamed Ferhat","doi":"10.1007/s10948-026-07171-2","DOIUrl":"10.1007/s10948-026-07171-2","url":null,"abstract":"<div>\u0000 \u0000 The radium-hydrogen system represents a largely unexplored region of high-pressure chemistry. Using evolutionary crystal structure searches and first-principles calculations, we have systematically explored the Ra-H phase diagram under pressure up to 50 GPa. This computational analysis reveals a series of stable stoichiometries: tetragonal Ra2H4 (P4/nmm) and RaH6 (I4/mmm) cubic RaH (Fm(stackrel{-}{3})m), and hexagonal RaH₂ (P6/mmm). All phases are confirmed to be thermodynamically, mechanically, and dynamically stable under the corresponding pressures. Hexagonal RaH₂ exhibits outstanding mechanical properties, with a calculated Vickers hardness of ∼20 GPa, indicating its potential as a hard compound. Electronic structure analysis reveals a clear distinction: RaH, and RaH2 are metallic, whereas Ra2H4 and RaH6 are semiconducting. We further examined the superconducting properties of the metal phases. Cubic RaH emerges as a conventional superconductor, characterized by a substantial electron-phonon coupling constant λ = 0.675 leading to an estimated critical temperature Tc of ∼7.4 K. A detailed analysis of partial electronic density of states, phonon spectra, Eliashberg spectral function and phonon linewidths elucidates the microscopic mechanism. The superconductivity in RaH is predominantly driven by strong interaction between electronic H-s states near the Fermi-level and the high-frequency longitudinal optical phonon modes of the hydrogen sublattice. Contributions from the low-frequency acoustic modes associated with radium atoms are comparatively weak. In contrast, hexagonal RaH2 exhibits a much weak EPC (λ = 0.36), resulting in a negligibly low Tc of ∼0.13 K.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-04-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147642889","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Synthesis and Magnetodielectric Evaluation of LaMnO₃:rGO Thin Films on Quartz Using Sol–Gel Spin Coating 溶胶-凝胶自旋涂层在石英上制备LaMnO₃：rGO薄膜及磁介电性能评价

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-04-09 DOI: 10.1007/s10948-026-07170-3

Vaishali Misra, Manisha Yadav, Kirti Bhardwaj, Sanjeev Kumar Sharma, Rahul Goel, Sanjeev Kumar, Jehova Jire L.Hmar, Vishal Singh

{"title":"Synthesis and Magnetodielectric Evaluation of LaMnO₃:rGO Thin Films on Quartz Using Sol–Gel Spin Coating","authors":"Vaishali Misra, Manisha Yadav, Kirti Bhardwaj, Sanjeev Kumar Sharma, Rahul Goel, Sanjeev Kumar, Jehova Jire L.Hmar, Vishal Singh","doi":"10.1007/s10948-026-07170-3","DOIUrl":"10.1007/s10948-026-07170-3","url":null,"abstract":"<div>\u0000 \u0000 Synergetic effects of lanthanum manganite (LaMnO₃) and reduced graphene oxide (rGO) enhance the electrical, magnetic, and magneto-dielectric properties in thin films for advanced uses in spintronic, sensors, memory devices, energy storage, flexible electronics, and other fields. This work investigates the multiferroic behaviour of LaMnO₃ and LaMnO₃: rGO thin films with 5 wt% and 20 wt% rGO, synthesized via spin coating, maintaining the perovskite structure and yielding uniform 22 nm LaMnO₃ particles embedded in rGO sheets. Dielectric properties were assessed from 100 Hz to 1 MHz, while magnetic properties were analyzed at low (5 K) and room temperature (300 K), revealing spontaneous magnetization. The films showed a maximum magneto-dielectric effect of 17.9% at 10 kOe and high magneto-electric coupling coefficients (γ ≈ -1.85 × 10⁻¹ (memu/g)⁻² and χE ≈ 145.45 mV/cm Oe) in LaMnO₃, demonstrating potential for non-volatile, lead-free multiferroic memory devices due to the coexistence of room-temperature ferroelectric and ferromagnetic orders.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-04-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147642884","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Tailoring the Optical and Magnetic Properties of Single Layered Nickel Oxide Nanocoating: A New Green Synthesis Approach 调整单层氧化镍纳米涂层的光学和磁性：一种新的绿色合成方法

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-04-02 DOI: 10.1007/s10948-026-07164-1

Y. T. Gebreslassie, H. G. Gebretinsae, Giday G. Welegergs, M. G. Tsegay, Z. Y. Nuru, M. Maaza, Pontsho Mbule, Bakang M Mothudi

{"title":"Tailoring the Optical and Magnetic Properties of Single Layered Nickel Oxide Nanocoating: A New Green Synthesis Approach","authors":"Y. T. Gebreslassie, H. G. Gebretinsae, Giday G. Welegergs, M. G. Tsegay, Z. Y. Nuru, M. Maaza, Pontsho Mbule, Bakang M Mothudi","doi":"10.1007/s10948-026-07164-1","DOIUrl":"10.1007/s10948-026-07164-1","url":null,"abstract":"<div>\u0000 \u0000 The quest for sustainable nanofabrication places green synthesis at the forefront of materials innovation. This work presents a novel, cactus plant extract-based route for depositing uniform nickel oxide (NiO) nanocoating on copper substrate via spin coating. Morphological characterization using scanning electron microscope (SEM) coupled with energy-dispersive X-ray spectroscopy (EDS) confirmed that bio-organic agents highlight the formation of spherical nanoparticles with an average grain size of 35 nm and their elemental composition respectively. X-ray diffraction (XRD) analysis revealed the formation of face-centered cubic (fcc) crystalline phase of NiO, with average crystallites 13.5 nm and 18 nm calculated using Scherrer’s equation and Williamson-Hall(W–H) plot respectively. The W–H approach separated peak broadening contributions from size and strain, yielding a more accurate estimate of true crystallite size. Rietveld refinement was employed to achieve precise diffraction parameters. Dielectric measurements showed that the dielectric constant ((:{epsilon:}_{r})) and loss tangent ((:text{tan}delta:)) decreases sharply at low frequencies and tends to flat at high frequency. Optical analysis indicated a narrowed band gap of 3.31 eV, while magnetic studies revealed a transition from weak ferromagnetism with exchange bias at 50 K to superparamagnetic at 300 K, driven by thermal fluctuations. These results establish a direct link between eco-friendly synthesis and tunable functional properties, positioning biosynthesized NiO as a promising candidate for next-generation optoelectronic and spintronic applications.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s10948-026-07164-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606351","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural Determinant of Electromagnetic Response in Closed-Loop HTS Coils Under Traveling Magnetic Fields: Switching from Demagnetization to Magnetization via Outermost Tape Reconfiguration 行磁场下闭环高温超导线圈电磁响应的结构决定因素：通过最外层带重构从退磁到磁化的切换

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-04-02 DOI: 10.1007/s10948-026-07161-4

Jinglan Zhou, Zhuoyan Zhong, Wei Wu

{"title":"Structural Determinant of Electromagnetic Response in Closed-Loop HTS Coils Under Traveling Magnetic Fields: Switching from Demagnetization to Magnetization via Outermost Tape Reconfiguration","authors":"Jinglan Zhou, Zhuoyan Zhong, Wei Wu","doi":"10.1007/s10948-026-07161-4","DOIUrl":"10.1007/s10948-026-07161-4","url":null,"abstract":"<div>\u0000 \u0000 In applications such as maglev trains, onboard high-temperature superconducting (HTS) magnets are exposed to traveling magnetic fields, often leading to coil current decay (demagnetization). Conversely, traveling magnetic fields are employed in HTS flux pumps for contactless charging (magnetization). To clarify the underlying mechanisms and transition conditions between these two opposing phenomena, this paper investigates the influence of the outermost tape configuration on the electromagnetic response of a closed-loop HTS coil under a traveling magnetic field via finite element modeling. The study demonstrates that rotating the outermost half-turn tape of the closed-loop coil by 90°, orienting its surface perpendicular to the traveling magnetic field, transforms it into an effective embedded magnetization source capable of generating a net DC magnetization voltage. When this magnetization voltage exceeds the demagnetization voltage arising from the dynamic resistance effect in the main coil body, the coil exhibits net magnetization; otherwise, it exhibits net demagnetization. Parametric studies further reveal that by strategically designing the configuration of the outermost tape, the direction and magnitude of this net effect can be actively controlled, enabling proactive management of the coil’s dynamic behavior under the traveling magnetic field. This study identifies the coil’s own configuration as the key factor governing its interaction mode with traveling magnetic fields, providing a novel structural design concept for developing onboard HTS magnets with high interference immunity.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606352","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effects of Mn Substitution for B and Two-Step Annealing on the Amorphous-Forming Ability, Soft-Magnetic Properties, and Microstructure of Fe–Si–B–C–Cu Alloys Mn取代B和两步退火对Fe-Si-B-C-Cu合金非晶成形能力、软磁性能和显微组织的影响

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-04-01 DOI: 10.1007/s10948-026-07168-x

Bo-Ju Fang, Zhe Chen, Qian-Ke Zhu, Shu-Jie Kang, Yong-Bin Li, Ke-Wei Zhang

{"title":"Effects of Mn Substitution for B and Two-Step Annealing on the Amorphous-Forming Ability, Soft-Magnetic Properties, and Microstructure of Fe–Si–B–C–Cu Alloys","authors":"Bo-Ju Fang, Zhe Chen, Qian-Ke Zhu, Shu-Jie Kang, Yong-Bin Li, Ke-Wei Zhang","doi":"10.1007/s10948-026-07168-x","DOIUrl":"10.1007/s10948-026-07168-x","url":null,"abstract":"<div>\u0000 \u0000 Alloying and annealing are key strategies for improving the soft-magnetic performance of Fe-based amorphous/nanocrystalline alloys. We systematically investigated the amorphous-forming ability (AFA), soft-magnetic properties, and microstructure of Fe₈₂Si₄B₁₂−xC₁Cu₁Mnₓ (x = 0–2) with B partially replaced by a trace amount of Mn while keeping the Fe content constant. Conventional annealing (CA) was compared with two-step annealing (TSA). All compositions showed good AFA and a wide annealing temperature window (ΔTx). Atomic rearrangement during pre-annealing (structural relaxation) increased the nucleation density of Cu clusters in the amorphous matrix. TSA markedly influenced the coercivity (Hc), saturation magnetic flux density (Bs), and α-Fe grain number density (Nd). The Fe82Si4B11C1Cu1Mn1 alloy obtained by TSA exhibited excellent magnetic properties, with Bs = 1.77 T, Hc = 5.41 A/m, and µe = 1.31 × 104 at 1 kHz. Meanwhile, the Nd of α-Fe increased from 8.33 × 1021 m− 3 to 2.48 × 1022 m− 3.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606623","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural Stability, Mechanical Behavior, Electronic feature, and Half-Metallic Ferromagnetism of Ir₂XGe (X = V, Cr, Mn) Heusler Alloys: Prospective for New Spintronic Devices Ir₂XGe (X = V, Cr, Mn) Heusler合金的结构稳定性、力学行为、电子特性和半金属铁磁性：对新型自旋电子器件的展望

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-03-31 DOI: 10.1007/s10948-026-07162-3

F. Ghouali, K. Bidai, M. Batouche, M. E.A. El Goutni, T. Seddik, Muhammad Haseeb, Zulfiqar Ali

{"title":"Structural Stability, Mechanical Behavior, Electronic feature, and Half-Metallic Ferromagnetism of Ir₂XGe (X = V, Cr, Mn) Heusler Alloys: Prospective for New Spintronic Devices","authors":"F. Ghouali, K. Bidai, M. Batouche, M. E.A. El Goutni, T. Seddik, Muhammad Haseeb, Zulfiqar Ali","doi":"10.1007/s10948-026-07162-3","DOIUrl":"10.1007/s10948-026-07162-3","url":null,"abstract":"<div>\u0000 \u0000 The present work addresses the limited theoretical understanding of Ir-based full-Heusler alloys Ir₂XGe (X = V, Cr, Mn), whose structural stability and spin-dependent electronic properties remain insufficiently explored. Using the full-potential linearized augmented plane wave plus local orbital (FP-APW + lo) method within density functional theory, structural, mechanical, electronic, optical and magnetic properties were systematically investigated employing both GGA-PBE and the modified Becke–Johnson (mBJ) exchange potential. Total energy calculations confirm that all compounds stabilize in the regular L2₁ structure with a ferromagnetic ground state. The calculated equilibrium lattice parameters are 6.11 Å (Ir₂VGe), 6.07 Å (Ir₂CrGe), and 6.07 Å (Ir₂MnGe). Elastic constants satisfy the mechanical stability criteria for cubic systems, and Pugh’s ratio indicates ductile behavior, particularly for Ir₂MnGe. Ab initio molecular dynamics simulations reveal structural robustness without phase transformation up to 500 K. Electronic structure calculations within mBJ predict half-metallic behavior, characterized by metallic majority-spin states and minority-spin band gaps of 0.47 eV, 0.43 eV, and 0.26 eV for Ir₂VGe, Ir₂CrGe, and Ir₂MnGe, respectively. Integer total magnetic moments of 3, 4, and 5 µB per formula unit follow the Slater–Pauling rule (Mₜ = Nv − 24), leading to a theoretical prediction of 100% spin polarization within the mBJ approximation. These results indicate that Ir₂XGe compounds are promising candidates for spintronic applications.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606977","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Stable Magnetic Cr₂ZnB MAX-Phase Boride and its Magnetic MXene Derivative Cr₂B. DFT and DFT + U Investigation 稳定磁性Cr₂ZnB max相硼化物及其磁性MXene衍生物Cr₂B。DFT和DFT + U调查

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-03-31 DOI: 10.1007/s10948-026-07166-z

Ahmed Lokbaichi, Ahmed Gueddouh, Mourad Rougab, Brahim Lagoun, Djelloul Gueribiz, Fatima Elhamra, Ahmed Mahammedi

{"title":"Stable Magnetic Cr₂ZnB MAX-Phase Boride and its Magnetic MXene Derivative Cr₂B. DFT and DFT + U Investigation","authors":"Ahmed Lokbaichi, Ahmed Gueddouh, Mourad Rougab, Brahim Lagoun, Djelloul Gueribiz, Fatima Elhamra, Ahmed Mahammedi","doi":"10.1007/s10948-026-07166-z","DOIUrl":"10.1007/s10948-026-07166-z","url":null,"abstract":"<div>\u0000 \u0000 This study presents a comprehensive density functional theory (DFT) investigation of the newly proposed Cr2ZnB MAX phase boride and its two-dimensional MXene derivative, Cr2B. Using spin-polarized DFT and the Hubbard U correction (DFT + U), we analyze the structural, electronic, magnetic, mechanical, dynamical, and thermal properties of these materials. Robust thermodynamic, mechanical, and dynamical stabilities are demonstrated for Cr2ZnB with both the PBE and PBE + U functionals. Notably, the magnetic moment shows a pronounced dependence on electron correlation treatment, with values increasing from 0.46 µB (PBE) to 13.33 µB (PBE + U). Our results confirm the metallic character of Cr2ZnB and establish the viability of its exfoliation into stable 2D Cr2B MXene monolayers, which retain strong ferromagnetism (7.76 µB). These findings highlight the potential of Cr2ZnB and its derivatives for applications in spintronics, energy storage, and advanced magnetic devices.\u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147606976","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The Structural, Magnetic and Optical Properties of α-Fe2O3-BaTiO3 Particulate Composites α-Fe2O3-BaTiO3颗粒复合材料的结构、磁性和光学性能

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-03-28 DOI: 10.1007/s10948-026-07165-0

Prakash Bongurala, P. Syam Prasad, S. Narayana Jammalamadaka

{"title":"The Structural, Magnetic and Optical Properties of α-Fe2O3-BaTiO3 Particulate Composites","authors":"Prakash Bongurala, P. Syam Prasad, S. Narayana Jammalamadaka","doi":"10.1007/s10948-026-07165-0","DOIUrl":"10.1007/s10948-026-07165-0","url":null,"abstract":"<div>\u0000 \u0000 Tuning magnetic, optical and structural properties with a compressive stress (strain) is a key goal for developing next-generation low-power memory and spintronic devices. In this study, we explore strain-mediated magnetoelectric coupling in α-Fe2O3–BaTiO3 (BTO) particulate composites synthesized via a co-precipitation method. Structural and morphological analyses confirm phase-pure composites with strong interfacial contact. Saturation magnetization of the composite (x)BTO + (1–x)Fe2O3 decreases with an increase in the BTO fraction (x) from 0 to 0.5. Raman spectroscopy shows shifts in vibrational modes due to compressive stress in BTO, while UV–Visible spectroscopy indicates a reduction in bandgap of BTO with an increase in Fe2O3 content. These findings demonstrate compressive strain that exist at the interface is key to modify the physical properties of the α-Fe2O3–BaTiO3 (BTO) particulate composites. \u0000 </div>","PeriodicalId":669,"journal":{"name":"Journal of Superconductivity and Novel Magnetism","volume":"39 2","pages":""},"PeriodicalIF":1.7,"publicationDate":"2026-03-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"147561529","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Monte Carlo Analysis of Vacancy Effects on Thermal and Magnetic Traits in Fullerene C60 空位对富勒烯C60热磁性能影响的蒙特卡罗分析

IF 1.7 4区物理与天体物理

Journal of Superconductivity and Novel Magnetism Pub Date : 2026-03-27 DOI: 10.1007/s10948-026-07167-y

Hussein Sabbah, Z. Fadil, Doha Kabouchi, A. Mhirech, Chaitany Jayprakash Raorane, E. Salmani, Khaled H. Mahmoud, Abdulrahman A. Alsayyari

引用次数: 0