Current Applied Physics最新文献_第4页

Strain-tunable perpendicular magnetic anisotropy in equiatomic Co–Pt: Orbital-resolved design rules from first-principles 等原子Co-Pt中应变可调垂直磁各向异性：基于第一性原理的轨道分辨设计规则

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-11-28 DOI: 10.1016/j.cap.2025.11.011

Sohee Park , Young-Kyun Kwon

{"title":"Strain-tunable perpendicular magnetic anisotropy in equiatomic Co–Pt: Orbital-resolved design rules from first-principles","authors":"Sohee Park , Young-Kyun Kwon","doi":"10.1016/j.cap.2025.11.011","DOIUrl":"10.1016/j.cap.2025.11.011","url":null,"abstract":"<div><div>Co-Pt alloys are key perpendicular-anisotropy materials for spintronic devices. Using density-functional theory with spin-orbit coupling, we systematically map how the Co:Pt ratio and biaxial strain applied along [001] (fct) and [111] (hcp) govern the magnetic anisotropy energy (MAE). The most robust perpendicular magnetic anisotropy emerges at the equiatomic 1:1 composition, where L10 CoPt shows <math><msub><mi>E</mi><mrow><mtext>MAE</mtext></mrow></msub><mo>≈</mo><mn>0.5</mn></math> meV/atom at zero strain. Under biaxial strain, fct phases display an inverted-parabolic MAE response with a sign change near <math><mo>+</mo><mn>2</mn><mspace></mspace><mi>%</mi></math> tensile strain, whereas hcp CoPt maintains positive MAE over the explored strain window with a direct-parabolic trend. Orbital-resolved analysis reveals a competition between Co-driven spin-conserving channels (<math><msub><mi>L</mi><mi>z</mi></msub></math>; Bruno-type behavior) and Pt-dominated spin-flip channels (<math><msub><mi>L</mi><mi>x</mi></msub></math>), accounting for both the composition dependence and the contrasting strain responses. These insights yield practical design rules—keep the equiatomic composition and apply moderate biaxial strain—to maximize PMA and thermal stability, providing guidance for engineering high-density magnetic storage and spin-torque device platforms.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 46-52"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748658","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

Dependence of piezoelectric properties and thermal stability of (1–x)BiFeO3–xBaTiO3 ceramics in relation to accelerometer performance （1-x） BiFeO3-xBaTiO3陶瓷的压电性能和热稳定性与加速度计性能的关系

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-01 DOI: 10.1016/j.cap.2025.11.014

Kyu-Hyun Park, Byung-Hoon Kim, Changyeon Baek, Yun-Gi Jeong, Min-Ku Lee, Gyoung-Ja Lee

{"title":"Dependence of piezoelectric properties and thermal stability of (1–x)BiFeO3–xBaTiO3 ceramics in relation to accelerometer performance","authors":"Kyu-Hyun Park, Byung-Hoon Kim, Changyeon Baek, Yun-Gi Jeong, Min-Ku Lee, Gyoung-Ja Lee","doi":"10.1016/j.cap.2025.11.014","DOIUrl":"10.1016/j.cap.2025.11.014","url":null,"abstract":"<div><div>This study investigates the compositional dependence of piezoelectric and thermal properties in (1–x)BiFeO3–xBaTiO3 ceramics and evaluates their applicability in high-temperature accelerometer applications. Four compositions (x = 0.25, 0.30, 0.33, 0.35) were synthesized and analyzed for their structural, electrical, and thermal behaviors. The x = 0.25 composition, despite a relatively low piezoelectric coefficient (∼107 pC/N), exhibited the highest mechanical quality factor (∼67) and depolarization temperature (∼450 °C), along with superior resistance to thermally and mechanically induced degradation. When used in compression-mode accelerometers, this composition showed the highest sensitivity (∼23.4 pC/g) and operated up to ∼380 °C. These results suggest that reliable high-temperature sensor performance is influenced not only by the piezoelectric coefficient but also by thermal and mechanical stability, highlighting the importance of comprehensive compositional optimization. Additionally, a strong correlation was observed between the in situ piezoelectric response of the ceramics and the temperature-dependent sensitivity of the assembled sensors.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 38-45"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145692524","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

Investigation of key factors influencing UV-induced quantum yield in charge management 影响电荷管理中紫外光诱导量子产率的关键因素研究

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-11-14 DOI: 10.1016/j.cap.2025.11.007

Wenke Shi , Chenglong Yu , Jin Yan , Chenjie Miao , Siqi She , Lin Ji , Wenxian Zhang , Yuandong Jia , Yinbowen Zhang , Zeming Zhang , Yi Zhang , Hongqing Huo , Zhong Zhao

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W L3-edge x-ray study of 5d orbital excitations in WSe2 and WTe2 WSe2和WTe2中5d轨道激发的wl3边缘x射线研究

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI: 10.1016/j.cap.2025.12.005

Kyeong Jun Lee , Sihun Seong , Minji Park , Je-Ho Lee , Byeong-Gwan Cho , Tae Yeong Koo , Sang-Youn Park , Young Jun Chang , Maeng-Je Seong , Soonyong Park , Seo Hyoung Chang

{"title":"W L3-edge x-ray study of 5d orbital excitations in WSe2 and WTe2","authors":"Kyeong Jun Lee , Sihun Seong , Minji Park , Je-Ho Lee , Byeong-Gwan Cho , Tae Yeong Koo , Sang-Youn Park , Young Jun Chang , Maeng-Je Seong , Soonyong Park , Seo Hyoung Chang","doi":"10.1016/j.cap.2025.12.005","DOIUrl":"10.1016/j.cap.2025.12.005","url":null,"abstract":"<div><div>Two tungsten-based transition metal dichalcogenides (TMDs), tungsten diselenide (WSe2) and ditelluride (WTe2), offer suitable model systems for investigating the interplay between crystal structures and 5d-orbital hybridization in layered transition-metal systems. Using W L3-edge x-ray absorption spectroscopy (XAS) and resonant inelastic x-ray scattering (RIXS), we directly investigate the W 5d electronic states in polycrystalline TMDs samples. Combined with structural analyses, the white-line peaks in the XAS spectra, examined by their first-derivative peak positions, indicate symmetry-driven orbital states of WSe2 and WTe2. The corresponding RIXS spectra exhibit clearly distinct dd-excitations, indicating differences in W 5d orbital occupancy and ligand hybridization between the two compounds. This study provides a spectroscopic framework for understanding electronic structures of tungsten dichalcogenides in relation to chalcogen coordination changes and their topological and catalytic properties.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 102-106"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797716","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

Reversible conversion between Schottky and ohmic contacts of zinc oxide microwire under piezoelectric potential manipulation 压电电位作用下氧化锌微丝肖特基触点与欧姆触点的可逆转换

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-02 DOI: 10.1016/j.cap.2025.12.002

Hue Tran , Yugyeong Je , Hyunjeong Jeong , Eleanor E.B. Campbell , Ki Kang Kim , Sang Wook Lee

引用次数: 0

Enhanced analog switching in Ta2O5/HfO2 bilayer resistive switching device for improved synaptic behavior in neuromorphic computing 在Ta2O5/HfO2双层电阻开关器件中增强模拟开关以改善神经形态计算中的突触行为

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-11-20 DOI: 10.1016/j.cap.2025.11.006

Taehee Noh, Cheol Jun Kim, Jae Yeob Lee, Minkyung Ku, Tae Hoon Kim, Minu Kang, Hyeon Su Seong, Seung Jin Kang, Bo Soo Kang

{"title":"Enhanced analog switching in Ta2O5/HfO2 bilayer resistive switching device for improved synaptic behavior in neuromorphic computing","authors":"Taehee Noh, Cheol Jun Kim, Jae Yeob Lee, Minkyung Ku, Tae Hoon Kim, Minu Kang, Hyeon Su Seong, Seung Jin Kang, Bo Soo Kang","doi":"10.1016/j.cap.2025.11.006","DOIUrl":"10.1016/j.cap.2025.11.006","url":null,"abstract":"<div><div>Memristor with analog resistive switching (RS) characteristics has potential for effective utilization in hardware neuromorphic systems. We investigated the response by applying identical pulses to filamentary RS devices to induce synaptic functions. This study examined the effects of inserting Al2O3 or HfO2 into Ta2O5-based RS device on its switching behavior to analyze long-term plasticity. Abrupt potentiation (or depression) behavior in Ta2O5 single layer structure may be inappropriate for neuromorphic applications. Thus, we proposed bilayer structures to alleviate abrupt conductance change. More linear and symmetric conductance modulation was confirmed in Ta2O5/HfO2 device compared to Ta2O5/Al2O3 device: exhibiting high potential as a synaptic device for neuromorphic computing. High learning accuracy was verified in Ta2O5/HfO2 device through neural network simulation. Among all devices, its RS behavior was most consistent. This could originate from fewer remaining nucleation sites for reformation of conductive filament (CF). This stable CF reformation might contribute to reliable synaptic behavior.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 1-7"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145645620","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}

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Pressure-tuning of magnetic transition in a kagome antiferromagnet, YMn6Sn6 kagome反铁磁体YMn6Sn6的磁跃迁压力调谐

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-05 DOI: 10.1016/j.cap.2025.12.003

Minhyuk Choi , Resta Agung Susilo , Hyeongwoo Seo , Jiafeng Yan , Pyosang Kim , Hyeonsu Kim , Jaeyong Kim , Donghoon Seoung , Jun Sung Kim

引用次数: 0

Size-controlled synthesis of ZnO tetrapods using atmospheric pressure microwave plasma jets and application in NH3 gas detection 常压微波等离子体射流尺寸控制合成ZnO四足体及其在NH3气体检测中的应用

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-15 DOI: 10.1016/j.cap.2025.12.008

Soo-Hyuk Kang, Jong-Hwan Lee, Goo-Hwan Jeong

{"title":"Size-controlled synthesis of ZnO tetrapods using atmospheric pressure microwave plasma jets and application in NH3 gas detection","authors":"Soo-Hyuk Kang, Jong-Hwan Lee, Goo-Hwan Jeong","doi":"10.1016/j.cap.2025.12.008","DOIUrl":"10.1016/j.cap.2025.12.008","url":null,"abstract":"<div><div>Research on gas-detection sensors using metal oxides has gained significant attention due to their potential applications in environmental monitoring and safety. ZnO tetrapods, owing to their distinctive morphology, offer enhanced gas sensing properties. In this study, ZnO tetrapods were synthesized using an atmospheric pressure microwave plasma (APMP) system with 10 μm Zn powder as a precursor. This method enables rapid, large-scale production without the need for high-vacuum or high-temperature environments. The synthesized ZnO tetrapods exhibited particle sizes ranging from 100 to 700 nm, depending on applied plasma power and collection location. The ZnO tetrapods were subsequently spray-coated onto SiO2/Si substrates with Au electrodes to fabricate gas sensors. The NH3 sensing performance was evaluated, revealing that reducing the particle size from 700 to 100 nm increased the sensor response, defined as Ra/Rg (where Ra and Rg represent the electrical resistance in dry air and NH3 gas, respectively), by approximately 24.4 %, from 1.09 to 1.31. These results demonstrate that ZnO tetrapods with controlled morphology can serve as highly efficient gas-sensing materials.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 140-149"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145797712","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

Flexible and sustainable dielectric materials from natural rubber and Caryota urens extract for wearable and soft electronic devices 柔性和可持续的介电材料从天然橡胶和仙人掌提取物可穿戴和软电子设备

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-11 DOI: 10.1016/j.cap.2025.12.004

Mohammed Zamar Pasha , Faheem Ahmed Khan , N.M. Sudheep , C.J. Binish , G. Harisha , M.V. Murugendrappa , KS Krishna Kumar , Jobish Johns

{"title":"Flexible and sustainable dielectric materials from natural rubber and Caryota urens extract for wearable and soft electronic devices","authors":"Mohammed Zamar Pasha , Faheem Ahmed Khan , N.M. Sudheep , C.J. Binish , G. Harisha , M.V. Murugendrappa , KS Krishna Kumar , Jobish Johns","doi":"10.1016/j.cap.2025.12.004","DOIUrl":"10.1016/j.cap.2025.12.004","url":null,"abstract":"<div><div>This study explores the structural, mechanical, and dielectric properties of natural rubber (NR) blended with Caryota urens fruit extract (CUFE), with and without glutaraldehyde (GA) crosslinking, for sustainable dielectric materials. CUFE, rich in hydroxyl groups, was incorporated at varying concentrations to improve interfacial polarization and dielectric response. FTIR confirmed successful blending and crosslinking, while SEM revealed enhanced homogeneity with CUFE and GA treatment. Mechanical tests showed improved tensile strength and elongation at break, with optimum performance at 10 wt% CUFE. GA crosslinking enhanced dimensional stability but reduced elasticity due to network formation. Dielectric analysis indicated higher capacitance and lower impedance with increasing CUFE, driven by ionic and interfacial polarization. GA-crosslinked blends exhibited superior dielectric efficiency, with lower energy loss and higher charge storage capability. With flexibility, tunable conductivity, and strong dielectric performance, NR/CUFE blends show promise for flexible capacitors, wearable electronics, sensors, and sustainable devices.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 65-78"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748660","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

Correlation effects on magnetic structure and lattice dynamics of LaMn7O12: A first-principles study LaMn7O12磁性结构和晶格动力学的相关效应：第一性原理研究

IF 3.1 4区物理与天体物理

Current Applied Physics Pub Date : 2026-02-01 Epub Date: 2025-12-03 DOI: 10.1016/j.cap.2025.12.001

Haeyoon Jung , Indukuru Ramesh Reddy , Bongjae Kim , Jiyeon Kim , Sooran Kim

{"title":"Correlation effects on magnetic structure and lattice dynamics of LaMn7O12: A first-principles study","authors":"Haeyoon Jung , Indukuru Ramesh Reddy , Bongjae Kim , Jiyeon Kim , Sooran Kim","doi":"10.1016/j.cap.2025.12.001","DOIUrl":"10.1016/j.cap.2025.12.001","url":null,"abstract":"<div><div>LaMn7O12, a quadruple perovskite oxide (AA'3B4O12-type), has attracted attention for its notable bifunctional activity in oxygen evolution and reduction reactions. Here, we systematically investigate the magnetic phase diagram and lattice dynamics of LaMn7O12 using two density functional theory plus Hubbard U (DFT + U) approaches: the spin-density and the charge-only-density formalism. Phase diagram analysis as a function of U and J shows that both methods stabilize the experimentally observed antiferromagnetic (AFM) configuration (C-type AFM at the B-site and ferrimagnetic structure at the A′-site Mn ions) at U = 3.5 eV and J = 0.8 eV. These U and J values are consistent with those obtained from the constrained random phase approximation. Furthermore, we observe the dynamical stability of the AFM phase through phonon dispersion curves and analyze the Raman-active phonon modes. These results highlight the critical role of appropriate U and J parameters in accurately describing the properties of LaMn7O12.</div></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":"83 ","pages":"Pages 59-64"},"PeriodicalIF":3.1,"publicationDate":"2026-02-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145748661","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