Solid State Communications最新文献_第3页

Synergistic improvement of polarization and energy storage density of Ba0.4Sr0.6TiO3 ceramics by doping Sr0.7Bi0.2TiO3 掺杂Sr0.7Bi0.2TiO3协同改善Ba0.4Sr0.6TiO3陶瓷的极化和储能密度

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-04-02 DOI: 10.1016/j.ssc.2025.115945

Lisong Li , Tao Wei , Yibing Zhu , Yuankui Cao , Yahui Tian , Xue Fei

{"title":"Synergistic improvement of polarization and energy storage density of Ba0.4Sr0.6TiO3 ceramics by doping Sr0.7Bi0.2TiO3","authors":"Lisong Li , Tao Wei , Yibing Zhu , Yuankui Cao , Yahui Tian , Xue Fei","doi":"10.1016/j.ssc.2025.115945","DOIUrl":"10.1016/j.ssc.2025.115945","url":null,"abstract":"<div><div>Although dielectric ceramics have significant application in high-power energy storage devices, it remains to be limited by the low energy storage density. Ba0.4Sr0.6TiO3 ceramics has attract a great deal of attention in this area, due to its low dielectric loss, diffuse dielectric properties and ultra-high energy storage efficiency. While its energy storage density is still very limited, despite be made into MLCC. In this work, Sr0.7Bi0.2TiO3 was introduced to improve the energy performance of Ba0.4Sr0.6TiO3. Thanks to the defective dipoles and electronic polarization of Bi3+ after doping Sr0.7Bi0.2TiO3, the effective energy storage density of 0.9Ba0.4Sr0.6TiO3-0.1Sr0.7Bi0.2TiO3 ceramic can reach to 3.234 J/cm3, with the electric breakdown strength increasing to 380 kV/cm. This work supplied a new material for high power density ceramic. Meanwhile, it supplied a new way to enhance the energy storage performance of ceramics.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"402 ","pages":"Article 115945"},"PeriodicalIF":2.1,"publicationDate":"2025-04-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143834049","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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Contrasting structural stability and phase transition of α- and β-Ag2WO4 under pressure α-和β-Ag2WO4在压力下的结构稳定性和相变对比

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-29 DOI: 10.1016/j.ssc.2025.115940

Zheng Wang , Zilong Zhang , Junbo Wang , Shiquan Feng , Kun Yang , Xuerui Cheng

{"title":"Contrasting structural stability and phase transition of α- and β-Ag2WO4 under pressure","authors":"Zheng Wang , Zilong Zhang , Junbo Wang , Shiquan Feng , Kun Yang , Xuerui Cheng","doi":"10.1016/j.ssc.2025.115940","DOIUrl":"10.1016/j.ssc.2025.115940","url":null,"abstract":"<div><div>Ag2WO4 has attracted wide interest due to its excellent visible light photocatalysis. Besides special property, Ag2WO4 exhibits rich polymorphism and crystallizes in three polymorphs. In the present work, orthorhombic α-Ag2WO4 and hexagonal β-Ag2WO4 were successfully synthesized. Structural stability and structural evolution were in situ investigated for two types Ag2WO4 up to 34.5 GPa using synchrotron X-ray diffraction, Raman spectroscopy, and first principle calculation. Both theoretical and experimental results showed that α-Ag2WO4 is thermodynamically stable, and no phase transition presents under pressure. In contrast, for β-Ag2WO4, one pressure-induced phase transition presents at 7.6 GPa and completely finishes around 12.8 GPa. This high pressure phase is monoclinic structure, being one new structure for Ag2WO4. This monoclinic phase keeps stable to 34.5 GPa, but it will convert back to the α phase rather than the initial β phase during decompression, meaning this phase transition is irreversible. Moreover, theoretical result predicts γ-Ag2WO4 will transform to β-Ag2WO4 around 5.0 GPa, resulting one phase transition sequence of γ→β→monoclinic phase→α for γ-Ag2WO4 during a decompression-decompression cycle. These phase transitions were first revealed for polymorphism Ag2WO4, which is helpful for its application in high pressure condition.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"401 ","pages":"Article 115940"},"PeriodicalIF":2.1,"publicationDate":"2025-03-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738239","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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Anisotropic magnetocaloric effect and first- principle calculations on Nd2Fe14B Nd2Fe14B的各向异性磁热效应及第一性原理计算

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-27 DOI: 10.1016/j.ssc.2025.115935

M.M. Elkenany , S.H. Aly , Sherif Yehia , Doug Westmoreland , Fatema Z. Mohammad

引用次数: 0

Investigation of structural and electrical characteristics of the honeycomb-lattice BaNi1.5Co0.5(PO4)2 蜂窝状晶格BaNi1.5Co0.5(PO4)2的结构和电学特性研究

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-27 DOI: 10.1016/j.ssc.2025.115934

Shalini Mishra, Sakshi Upadhyay, Manish Kumar Tekam, Netram Kaurav

{"title":"Investigation of structural and electrical characteristics of the honeycomb-lattice BaNi1.5Co0.5(PO4)2","authors":"Shalini Mishra, Sakshi Upadhyay, Manish Kumar Tekam, Netram Kaurav","doi":"10.1016/j.ssc.2025.115934","DOIUrl":"10.1016/j.ssc.2025.115934","url":null,"abstract":"<div><div>We report a comprehensive study of the single-phase polycrystalline BaNi1.5Co0.5(PO4)2 material synthesized via a solid-state technique. In order to assess the structural characteristics and progress of the synthesis of BaNi1.5Co0.5(PO4)2, we analysed the material by X-ray diffraction (XRD) with a Cu-Kα radiation source (λ = 1.54 Å). The diffraction results reveal a trigonal crystal structure with a space group. To further investigate the sample's properties and examine its microstructure, we utilised field-emission scanning electron microscopy (FESEM) and energy-dispersive X-ray spectroscopy (EDX) to analyse the surface morphology and elemental composition, confirming the presence of specific elements. Raman spectroscopy and FTIR analysis indicated that the different vibrational modes exhibited various stretching and vibrational patterns. As the frequency increases, the dielectric constant and loss factor of the composites decrease due to relaxation, as evidenced by the investigation of dielectric properties. The spectra of electrical modulus and impedance showed deviations from the ideal Debye-like relaxation, suggesting a more intricate dielectric behaviour.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"401 ","pages":"Article 115934"},"PeriodicalIF":2.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738240","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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NiFe-LDH/co/C@NF composite electrocatalyst with enhanced oxygen evolution reaction performance 增强析氧反应性能的NiFe-LDH/co/C@NF复合电催化剂

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-27 DOI: 10.1016/j.ssc.2025.115939

Changwen Liu , Xueqiang Dong , Shuyuan Zhai , Mingyang Han , Qian Song , Xuefei Lai , Qin Long , Li Liao

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Structural and photoluminescence studies of LaNbO4:Er3+ phosphors synthesized via citric based sol-gel route for WLED applications 柠檬酸溶胶-凝胶法制备用于WLED的LaNbO4:Er3+荧光粉的结构和光致发光研究

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-27 DOI: 10.1016/j.ssc.2025.115937

P. Remya Mohan , E. Sreeja , Adon Jose , T. Krishnapriya , Cyriac Joseph , P.R. Biju

{"title":"Structural and photoluminescence studies of LaNbO4:Er3+ phosphors synthesized via citric based sol-gel route for WLED applications","authors":"P. Remya Mohan , E. Sreeja , Adon Jose , T. Krishnapriya , Cyriac Joseph , P.R. Biju","doi":"10.1016/j.ssc.2025.115937","DOIUrl":"10.1016/j.ssc.2025.115937","url":null,"abstract":"<div><div>A series of Er3+ activated LaNbO4 phosphor were synthesized via citric sol-gel method. The structural, elemental and morphological investigations were done by XRD, FTIR, EDS, SEM and TEM analysis. Structural studies confirm the monoclinic phase of the phosphor and micro structure nature of the samples were analyzed by SEM and TEM analysis. UV–Vis–NIR optical absorption spectrum of La0.99NbO4:0.01Er3+ phosphor was analyzed on the basis of Judd-Ofelt theory and radiative properties were calculated using JO intensity parameters. The energy transfer from host to Er3+ ions were studied at host excitation of 251 nm. Under 379 nm excitation of Er3+ ions, LaNbO4:Er3+ phosphors emit intense green light due to transitions 2H11/2 → 4I15/2 and 4S3/2 → 4I15/2. NIR photoluminescence spectra were measured and intense near infrared emission at 980 nm (4I11/2 → 4I15/2) and 1535 nm (4I13/2 → 4I15/2) were observed under 800 nm excitation. Upconversion fluorescence properties of La1-xNbO4:xEr3+ phosphors have also been studied at 980 nm excitation and three strong emissions were observed around 529 nm (2H11/2 → 4I15/2), 551 nm (2S3/2 → 4I15/2) and 668 nm (4F9/2 → 4I15/2). CIE chromaticity studies were done for both downconversion and upconversion fluorescence. The samples are exhibiting yellowish green emission under both 379 nm and 980 nm excitations and the corresponding CCT values and color purity were also calculated.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"401 ","pages":"Article 115937"},"PeriodicalIF":2.1,"publicationDate":"2025-03-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143738242","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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Investigation of magnetic properties of disordered Co1.75Ni0.25MnSi full-Heusler alloy 无序Co1.75Ni0.25MnSi全heusler合金磁性能研究

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-26 DOI: 10.1016/j.ssc.2025.115938

Ashish Kumar , Gunjan Sharma , Roop Chandra , Bal Govind , Chetan Sharma , V.N. Singh

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Influence of Sb doping on electrical and magnetic properties of SnO2 compounds Sb掺杂对SnO2化合物电磁性能的影响

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-25 DOI: 10.1016/j.ssc.2025.115936

K.K. Singha, S.K. Srivastava

{"title":"Influence of Sb doping on electrical and magnetic properties of SnO2 compounds","authors":"K.K. Singha, S.K. Srivastava","doi":"10.1016/j.ssc.2025.115936","DOIUrl":"10.1016/j.ssc.2025.115936","url":null,"abstract":"<div><div>Extensive research has been conducted to explore the potential applications of oxide materials doped with non–magnetic elements for spintronic devices. Our current investigation focuses on the synthesis of Sn1-xSbxO2 (where x ranges from 0 to 0.10 with a step size of 0.02) polycrystalline samples via the traditional solid–state reaction method, along with an analysis of their current–voltage (I–V) characteristics, high–temperature resistivity, and room temperature magnetic hysteresis (B–H) curves. By employing an electrometer, the I–V characteristics were recorded and it indicate that the incorporation of Sb doping enhances the conductivity of SnO2, resulting in a lower voltage for leakage current saturation. The high temperature electrical resistivity measurements of these compounds revealed that an increase of Sb doping concentrations led to the reduction of the resistivity. The B–H loop study displays ferromagnetic behaviour along-with coercivity value increasing from 540 Oe to 620 Oe upon increasing Sb doping concentrations.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"401 ","pages":"Article 115936"},"PeriodicalIF":2.1,"publicationDate":"2025-03-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143725602","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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Unveiling structure-activity relationship between carbon crystallography and sodium ion battery anodes 揭示碳晶体学与钠离子电池阳极的构效关系

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-22 DOI: 10.1016/j.ssc.2025.115933

Yanyan Li

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Vacancy-induced localized modes and impurity band formation in the Haldane model: A quantum dot analogy 霍尔丹模型中的空位诱导局部模式和杂质带形成：量子点类比

IF 2.1 4区物理与天体物理

Solid State Communications Pub Date : 2025-03-22 DOI: 10.1016/j.ssc.2025.115923

Hussein Al-Shuwaili , Zahra Noorinejad , Mohsen Amini , Morteza Soltani , Ebrahim Ghanbari-Adivi

{"title":"Vacancy-induced localized modes and impurity band formation in the Haldane model: A quantum dot analogy","authors":"Hussein Al-Shuwaili , Zahra Noorinejad , Mohsen Amini , Morteza Soltani , Ebrahim Ghanbari-Adivi","doi":"10.1016/j.ssc.2025.115923","DOIUrl":"10.1016/j.ssc.2025.115923","url":null,"abstract":"<div><div>In this study, the Haldane model’s edge states are utilized to illustrate that a zero-energy localized state forms around a single vacancy in the model. In order to complete this task, the conventional unit cell associated to the Haldane hexagonal structure is transferred onto a two-leg ladder in momentum space, effectively forming an extended Su–Schrieffer–Heeger (SSH) lattice through a one-dimensional Fourier transform. Through the application of a suitable unitary transformation, the two-leg SSH ladder in momentum space is converted into an equivalent lattice with two distinct on-site states with different momentum that are suitable for the calculations. Ultimately, the desired zero-energy localized mode formed around the vacant-site is represented by a combination of the armchair edge states. Furthermore, the scenario involving two vacant sites is investigated and it is revealed that an effective hopping interaction exists between the localized states formed around the on-site vacancies created along a zigzag chain in the lattice. This structure can be likened to the structure of a quantum dot with two none-degenerate energy levels. Such a hopping interaction is absent for the same vacancies created on the armchair chains. Finally, it is shown that introducing vacancies periodically on the sites of a zigzag row along a finite-width ribbon with the Haldane structure leads to the emergence of an impurity band within the energy gap.</div></div>","PeriodicalId":430,"journal":{"name":"Solid State Communications","volume":"401 ","pages":"Article 115923"},"PeriodicalIF":2.1,"publicationDate":"2025-03-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143685489","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