Physica Status Solidi B-basic Solid State Physics最新文献_第5页

Anelastic and Magnetic Properties of Polycrystalline La0.6Sr0.4Fe1−xCuxO3−δ 多晶 La0.6Sr0.4Fe1-xCuxO3-δ 的弹性和磁性能

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-22 DOI: 10.1002/pssb.202400218

Boren Xue, Xuenong Ying, Xiaomei Lu

{"title":"Anelastic and Magnetic Properties of Polycrystalline La0.6Sr0.4Fe1−xCuxO3−δ","authors":"Boren Xue, Xuenong Ying, Xiaomei Lu","doi":"10.1002/pssb.202400218","DOIUrl":"https://doi.org/10.1002/pssb.202400218","url":null,"abstract":"Perovskite La0.6Sr0.4Fe1−xCuxO3−δ (x = 0, 0.05, 0.1, and 0.2) polycrystalline samples have been synthesized in air and investigated by X‐Ray diffraction, scanning electron microscope, magnetization, and mechanical spectroscopy. An antiferromagnetic transition is observed around 300 K, while no corresponding anomaly is observed in the mechanical spectrum, indicating the absence of conventional magnetoelastic coupling. For La0.6Sr0.4FeO3, an internal friction peak (P1) presents around 140 K and shifts to lower temperatures with increasing Cu‐doping content. Meanwhile, a magnetic anomaly is also observed around P1 peak temperature. As explained, the P1 peak is related to the freezing of the ferroelastic domain walls, and the mechanical energy dissipation is induced by the lagging variation of the octahedral tilting under the alternating stress. This work suggests a peculiar magnetic property of the octahedra within ferroelastic domain walls.","PeriodicalId":20406,"journal":{"name":"Physica Status Solidi B-basic Solid State Physics","volume":"46 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141780220","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

Influence of Polymodal Radiation Processes on Thermoluminescence and Its Quenching in MgO:Mn2+ Crystals 多模式辐射过程对 MgO:Mn2+ 晶体热致发光及其淬灭的影响

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-18 DOI: 10.1002/pssb.202400112

Vakhtang Kvatchadze, Guram Dekanozishvili, Meri Abramishvili, Zaira Akhvlediani, Dimitri Driaev, Valery Tavkhelidze

引用次数: 0

On the Auxetic Potential of Synthesizable Calix[4]arene Polymers 可合成钙[4]炔聚合物的助燃潜力

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-18 DOI: 10.1002/pssb.202400213

Maria A. Cardona, Joseph N. Grima, Ken E. Evans, Ruben Gatt

{"title":"On the Auxetic Potential of Synthesizable Calix[4]arene Polymers","authors":"Maria A. Cardona, Joseph N. Grima, Ken E. Evans, Ruben Gatt","doi":"10.1002/pssb.202400213","DOIUrl":"https://doi.org/10.1002/pssb.202400213","url":null,"abstract":"Materials exhibiting auxetic behavior have garnered significant interest due to their potential applications across various fields, with synthetic auxetic materials being one such group. Theoretical studies have demonstrated the potential for various organic polymeric systems to exhibit auxetic behavior. However, to date, only a few synthesized molecular systems have shown some degree of auxetic behavior. Among the theoretical classes of molecular systems that have attracted attention are calix[4]arene systems in the “egg‐rack” conformation. While the theoretical systems proposed in the literature have been deemed difficult to synthesize, calix[4]arene chemistry has advanced tremendously in recent years. In fact, a number of molecular systems with configurations similar to those predicted to exhibit a negative Poisson's ratio have been synthesized, albeit with different chemical moieties. Consequently, it is deemed valuable to study the potential of these synthesized systems to exhibit a negative Poisson's ratio through force‐field‐based simulations. This study is extended to include theoretical calix[4]arene systems linked by acetylene moieties, which are also potentially synthesizable through known methods. It is suggested that these materials can exhibit auxetic behavior when subjected to on‐axis loading in the [001] direction. A detailed mechanistic study of these systems is also conducted.","PeriodicalId":20406,"journal":{"name":"Physica Status Solidi B-basic Solid State Physics","volume":"41 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141739736","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

Impact of Boron Atom Clustering on the Electronic Structure of (B,In)N Alloys 硼原子团聚对 (B,In)N 合金电子结构的影响

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-12 DOI: 10.1002/pssb.202400016

Cara‐Lena Nies, Stefan Schulz

{"title":"Impact of Boron Atom Clustering on the Electronic Structure of (B,In)N Alloys","authors":"Cara‐Lena Nies, Stefan Schulz","doi":"10.1002/pssb.202400016","DOIUrl":"https://doi.org/10.1002/pssb.202400016","url":null,"abstract":"Tailoring the electronic and optical properties of nitride‐based alloys for optoelectronic device applications in the ultraviolet and red spectral range has attracted significant attention in recent years. Adding boron nitride (BN) to indium gallium nitride (In,Ga)N alloys can help to control the lattice mismatch between (In,Ga)N and GaN and may thus allow to reduce strain‐related defect formation. However, understanding of the impact of BN on the electronic properties of III‐N alloys, in particular the influence of experimentally observed boron atom clustering, is sparse. This work presents first‐principles calculations investigating the electronic properties of highly mismatched (B,In)N alloys with boron contents between 2% and 7%. Special attention is paid to the impact of the alloy microstructure. While the results show that the lattice constants of such alloys largely agree with lattice constants determined from a Vegard approximation, the electronic structure strongly depends on the local boron atom configuration. For instance, if boron atoms are dispersed throughout the structure and are not sharing nitrogen atoms, the band gap of (B,In)N alloys is largely unaffected and stays close to the gap of pristine InN. However, in the case of boron atom clustering, i.e., when boron atoms are sharing nitrogen atoms, the band gap can be strongly reduced, often leading to a metallic state in (B,In)N alloys. These strong band gap reductions are mainly driven by carrier localization effects in the valence band. Our calculations thus show that the electronic structure of (B,In)N alloys strongly depends on the alloy microstructure and that boron atom clustering plays an important role in understanding the electronic and optical properties of these emerging materials.","PeriodicalId":20406,"journal":{"name":"Physica Status Solidi B-basic Solid State Physics","volume":"9 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614188","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

Multidimensional Rainbow Trapping of Sound in the Second‐Order Topological Sonic Crystals 二阶拓扑声晶中的多维彩虹陷波

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-12 DOI: 10.1002/pssb.202400200

Jiu‐Jiu Chen, Qiu‐Shuang Yang, Shao‐Yong Huo, Chun‐Ming Fu

{"title":"Multidimensional Rainbow Trapping of Sound in the Second‐Order Topological Sonic Crystals","authors":"Jiu‐Jiu Chen, Qiu‐Shuang Yang, Shao‐Yong Huo, Chun‐Ming Fu","doi":"10.1002/pssb.202400200","DOIUrl":"https://doi.org/10.1002/pssb.202400200","url":null,"abstract":"Topological rainbow trapping, which can separate and trap different frequencies of topological states into different positions, plays a key role in topological acoustic devices. However, few schemes have been proposed to realize multidimensional topological rainbow trapping effects with the hierarchy of edge and corner, which has partly restricted their practical applications in multifunctional integrated acoustic devices. Herein, a tactic to realize a multidimensional topological rainbow trapping of acoustic wave with the hierarchy of edge and corner in the second‐order topological sonic crystals is proposed. Based on the designing of a self‐ordering structure to both induce the topological phases of the bulk and edge states in the rectangular lattice, the edge states and corner states are obtained. Furthermore, the regularity between the located frequency of topological edge and corner states and the geometric parameters are discussed in detail. Finally, the rainbow trapping effects for topological edge states and corner states are investigated, respectively, in which different frequencies of topological acoustic edge and corner states are well separated and trapped in different positions without overlap. This proposal may provide a novel way for multidimensional wave manipulation and the integration of multifunctional acoustic devices.","PeriodicalId":20406,"journal":{"name":"Physica Status Solidi B-basic Solid State Physics","volume":"60 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141614189","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

Compound Semiconductors 化合物半导体

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-11 DOI: 10.1002/pssb.202400227

Kwangseuk Kyhm, Jong Su Kim, Heonsu Jeon, Yong‐Hoon Cho

引用次数: 0

Detecting Strain Effects Due to Nanobubbles in Graphene Mach–Zehnder Interferometers 检测石墨烯马赫-泽恩德干涉仪中纳米气泡产生的应变效应

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-11 DOI: 10.1002/pssb.202470014

Nojoon Myoung, Taegeun Song, Hee Chul Park

引用次数: 0

Effects of Al2O3 Rear Interface Passivation on the Performance of Bifacial Kesterite‐Based Solar Cells with Fluorine‐Doped Tin Dioxide Back Contact 后界面钝化 Al2O3 对带有掺氟二氧化锡背触点的双面沸石基太阳能电池性能的影响

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-10 DOI: 10.1002/pssb.202400080

Hezekiah B. Sawa, Melike Babucci, Jan Keller, Charlotte Platzer Björkman, Nuru R. Mlyuka, Margaret E. Samiji

{"title":"Effects of Al2O3 Rear Interface Passivation on the Performance of Bifacial Kesterite‐Based Solar Cells with Fluorine‐Doped Tin Dioxide Back Contact","authors":"Hezekiah B. Sawa, Melike Babucci, Jan Keller, Charlotte Platzer Björkman, Nuru R. Mlyuka, Margaret E. Samiji","doi":"10.1002/pssb.202400080","DOIUrl":"https://doi.org/10.1002/pssb.202400080","url":null,"abstract":"Herein, ultrathin Al2O3 is investigated as a rear interface passivation layer for kesterite solar cells with F:SnO2 (FTO) back contact for potential performance improvement. On the passivation layer, a thin Mo layer is deposited to improve the FTO's ohmicity. Further, NaF is evaporated on the copper zinc tin sulfide (CZTS) precursors to create openings at the passivation layer and achieve Na‐induced benefits in the absorber. The CZTS absorbers deposited directly on the Al2O3‐coated FTO peel off, while those with Mo interlayer do not. For pure sulfide kesterite devices, the Al2O3 layer reduces the short‐circuit current density (JSC), resulting in poor device efficiency. On the other hand, significantly higher JSC is realized for mixed sulfide and selenide kesterite devices with Al2O3 passivation layer, with the current density–voltage curve suggesting a reduced barrier height at the rear interface. As a result, the efficiency is improved from 1.5% for devices without Al2O3 to 4.6% for those with Al2O3. Likewise, improved external quantum efficiency response is observed in the devices with passivation layer for backside and frontside illumination. Therefore, contribution of Al2O3 passivation layer to the performance of kesterite‐based solar cells is evident from the results of this study.","PeriodicalId":20406,"journal":{"name":"Physica Status Solidi B-basic Solid State Physics","volume":"31 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141586964","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

Competition between Cubic and Tetragonal Phase Induced Unusual Vertical Magnetization Shift and Exchange Bias in CoxMn3−xO4 (1 ≤ x ≤ 2) Spinel Nanoparticles 立方相和四方相之间的竞争诱导了 CoxMn3-xO4 (1 ≤ x ≤ 2) 尖晶石纳米粒子中不寻常的垂直磁化偏移和交换偏差

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-10 DOI: 10.1002/pssb.202400090

Sanjna Rajput, Chandana Rath

{"title":"Competition between Cubic and Tetragonal Phase Induced Unusual Vertical Magnetization Shift and Exchange Bias in CoxMn3−xO4 (1 ≤ x ≤ 2) Spinel Nanoparticles","authors":"Sanjna Rajput, Chandana Rath","doi":"10.1002/pssb.202400090","DOIUrl":"https://doi.org/10.1002/pssb.202400090","url":null,"abstract":"CoxMn3−xO4 (1 ≤ x ≤ 2) spinel nanoparticles synthesized through conventional coprecipitation technique exhibit the coexistence of tetragonal and cubic phases in the range of 1 ≤ x ≤ 1.5, while a pure cubic phase is observed for 1.75 ≤ x ≤ 2 at room temperature. Reduction in tetragonal phase fraction from 92 % for x = 1 to 47% for x = 1.5 is attributed to diminution of Jahn–Teller (J–T) active Mn3+ ions occupying the octahedral site of spinel lattice. X‐ray photoelectron spectroscopy confirms both +2 and +3 oxidation states for Co and Mn. Surprisingly, cubic and tetragonal phases exhibit magnetic transition, Tc1 and Tc2, corresponding to a paramagnetic to a high and low temperature ferrimagnetic state, respectively. Tetragonal phase induces high spontaneous (HSEB) and conventional (HCEB) exchange bias with unusually high vertical magnetization shift (VMS) than that of the pure cubic phase, shows maximum HCEB of 4.062 kOe for x = 1.5 and a VMS of 2.5 emu g−1 for x = 1. Such dependence of VMS and exchange bias on tetragonal to cubic phase ratio in CoxMn3−xO4 is demonstrated for the first time and interpreted based on the interaction between different arrangement of spins in tetrahedral and octahedral sublattice.","PeriodicalId":20406,"journal":{"name":"Physica Status Solidi B-basic Solid State Physics","volume":"57 1","pages":""},"PeriodicalIF":1.6,"publicationDate":"2024-07-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141588571","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

Nonlinear Optical Effects in Europium Melilite Eu2MgSi2O7 铕美拉尔 Eu2MgSi2O7 中的非线性光学效应

IF 1.6 4区物理与天体物理

Physica Status Solidi B-basic Solid State Physics Pub Date : 2024-07-08 DOI: 10.1002/pssb.202400172

Kseniya Mikhailovna Tsysar, Dmitry Igorevich Bazhanov, Karine Karlenovna Abgaryan, Nadezhda Nikolaevna Kiselyova

引用次数: 0