Yahya Taşgın , M. Sait Kanca , Mediha Kök , Ecem Özen Öner , Ömer Güler
{"title":"Zr and V-doped effect on Martensitic transformations and magnetic properties of NiMnIn shape memory alloy","authors":"Yahya Taşgın , M. Sait Kanca , Mediha Kök , Ecem Özen Öner , Ömer Güler","doi":"10.1016/j.cap.2024.05.019","DOIUrl":"10.1016/j.cap.2024.05.019","url":null,"abstract":"<div><p>In this study, the elements vanadium (V) and zirconium (Zr) were doped separately as a fourth element to the ternary NiMnIn Heusler magnetic shape memory alloy and the alloys were produced as ingots by arc-melting method. The shape memory properties, microstructures, magnetic and microstructural changes of these new alloys were investigated in detail. The vanadium (V) and zirconium (Zr) elements doped into the alloy caused a decrease in the transformation temperature values of the alloy, but did not cause a significant change in its magnetic properties. The master sample, which has low hysteresis, undergoes a phase transition from the martensite phase to the austenite phase due to an increase in the nucleation of austenite phases at the twinning boundaries. Here, the vanadium and zirconium doping of the alloy caused an increase in the strength and ductility values of the alloy and this caused the formation of the second phase. Due to the increase of this phase formation in the alloy, it can be said that there is a slight decrease in the shape retention of the alloy.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188270","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}
R. Mendoza-Pérez , J. Sastré-Hernández , C. Ramos-Vilchis , J.A. Del Oso-Acevedo , M. del C. Bonilla-Morales , G. Contreras-Puente
{"title":"Improved photovoltaic parameters of CdTe/PEDOT:PSS solar cells by CSS through their cooling in an O2 atmosphere","authors":"R. Mendoza-Pérez , J. Sastré-Hernández , C. Ramos-Vilchis , J.A. Del Oso-Acevedo , M. del C. Bonilla-Morales , G. Contreras-Puente","doi":"10.1016/j.cap.2024.05.016","DOIUrl":"https://doi.org/10.1016/j.cap.2024.05.016","url":null,"abstract":"<div><p>This work presents the influence of O<sub>2</sub> during the cooling stage (CS) after the deposition of the CdTe absorber layer on the photovoltaic parameters of CdTe/PEDOT:PSS hybrid solar cells. The CdTe samples were processed by closed space sublimation (CSS) at a constant deposition pressure of 100 mTorr under 50 %Ar + 50 %O<sub>2</sub> atmosphere. After CdTe deposition, the CSS system remained at a constant pressure of 50 mTorr for 10 min of the CS under different Ar + O<sub>2</sub> atmospheres and in vacuum, in order to study the influence of the cooling atmosphere on the optical, morphological and structural properties of CdTe and on the photovoltaic parameters of the CdTe/PEDOT:PSS hybrid solar cells. In addition, different cooling times (from 10 to 90 min) were studied in an O<sub>2</sub>-only atmosphere, when the cooling temperature decreased from 500 to 300 °C inside the CSS system, at the same pressure. SEM micrographs showed changes in the surface morphology of CdTe when cooled in O<sub>2</sub> atmosphere; while, EDS showed a slight modification in Te/Cd ratio for some samples with O<sub>2</sub> during CS. Carrying out a cooling process in O<sub>2</sub> atmosphere for 10 min allows improving the photovoltaic parameters J<sub>sc</sub>, V<sub>oc</sub>, FF, and η of the obtained hybrid solar cells. For cooling times longer than 30 min, the values of V<sub>oc</sub> and J<sub>sc</sub> started to decrease. The solar cells with cooling times of 10 and 30 min in an O<sub>2</sub> atmosphere show in the J vs. V curves an increase mainly in the V<sub>oc</sub>, FF and shunt resistances associated with the mitigation of defects at the interfaces and inside the materials, which may be due to a passivation of the absorber material. Solar cells with an O<sub>2</sub> cooling atmosphere also show an essential increase in the EQE response.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141242469","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}
J.Y. Lee, H.K. Kong, S.W. Kim, M.Y. Lee, J.H. Seo, Y.J. In, D.Y. Kim, B.W. Lee
{"title":"Improvement of permeability by enhancing packing fraction through tri-modal powder mixing of amorphous FeSiCrB","authors":"J.Y. Lee, H.K. Kong, S.W. Kim, M.Y. Lee, J.H. Seo, Y.J. In, D.Y. Kim, B.W. Lee","doi":"10.1016/j.cap.2024.05.017","DOIUrl":"https://doi.org/10.1016/j.cap.2024.05.017","url":null,"abstract":"<div><p>The improvement of packing fraction and magnetic permeability of amorphous FeSiCrB (FSCB) powder via the addition of Carbonyl Iron Powder (CIP) and nano Fe (NF) to insulated FeSiCrB (FSCB) amorphous powder was investigated. In the case of the bi-modal powder mixing, the packing fraction and permeability increased with the addition of CIP compared to FSCB, with the best packing fraction of 75.30 % and permeability of 25.86 at 20 wt% CIP. NF was added to maximize the packing fraction at 20 wt% CIP, and the maximum packing fraction of 76.69 % and permeability of 27.33 were found at 3 wt% NF. As the packing fraction increased with the addition of CIP and NF, the maximum permeability was obtained at the maximum packing fraction, which was consistent with Ollendorff's equation.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141250439","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}
{"title":"Enhancement of photoresponse and photovoltaic properties in KBiFe2O5/BiFeO3 bilayer thin films","authors":"Subhasri Subudhi , B.V.R.S. Subramanyam , Injamul Alam , Manoranjan Mandal , Santosini Patra , Alok Kumar Nayak , Pitamber Mahanandia","doi":"10.1016/j.cap.2024.05.015","DOIUrl":"10.1016/j.cap.2024.05.015","url":null,"abstract":"<div><p>In this report, the performance of a new photovoltaic device configuration in which bilayer KBiFe<sub>2</sub>O<sub>5</sub> (KBFO)/BiFeO<sub>3</sub> (BFO) as absorber materials have been investigated and compared with the single active layer-based devices of BFO and KBFO. The obtained short-circuit current density of 58.81 μAcm<sup>−2</sup>, open-circuit voltage of 0.65 V, and power conversion efficiency of 0.014 % for the complete photovoltaic device glass/FTO/KBFO/BFO/Ag are comparatively higher than that of glass/FTO/BFO/Ag and glass/FTO/KBFO/Ag devices. It has been observed that the active bilayer KBFO/BFO shows switchable photoresponse with respect to positive and negative polarities. This work may offer the procedures for further optimizing the photo absorber layer, thereby improving the performances of multiferroic-based devices for ferroelectric photovoltaic applications.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141188335","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}
Sooyeon Lim , Soohyung Park , Hong-Kyu Kim , In-Chan Choi
{"title":"Fully automated analysis approach for in situ electron diffraction","authors":"Sooyeon Lim , Soohyung Park , Hong-Kyu Kim , In-Chan Choi","doi":"10.1016/j.cap.2024.05.014","DOIUrl":"10.1016/j.cap.2024.05.014","url":null,"abstract":"<div><p>Despite the rapid development of the state-of-the-art <em>in-situ</em>/<em>operando</em> transmission electron microscopy technologies capable of generating a substantial volume of diffraction pattern images in a compressed time frame, the associated image interpretation apparatus remains incompletely automated. Since the analysis of the acquired data is predominantly focused on a subset of this extensive data set, there is the potential for critical information to be inadvertently omitted. Using a set of computer vision algorithms, we have developed a fully automated computational tool specifically tailored for the systematic analysis of electron diffraction patterns. Our research results demonstrate that the proposed methodology represents a viable and effective approach for the automated analysis of the substantial corpus of data collected during in-situ experimental investigations.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S156717392400110X/pdfft?md5=040eccb21f00174c8ee049ccc976a3b7&pid=1-s2.0-S156717392400110X-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141145342","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}
Aleksandar Ćirić, Milica Maričić, Zoran Ristić, Tamara Gavrilović, Mina Medić, Miroslav D. Dramićanin
{"title":"Remote optical thermometry by two-dimensional LiAl5O8:Cr3+ luminescence sensor probe","authors":"Aleksandar Ćirić, Milica Maričić, Zoran Ristić, Tamara Gavrilović, Mina Medić, Miroslav D. Dramićanin","doi":"10.1016/j.cap.2024.05.013","DOIUrl":"10.1016/j.cap.2024.05.013","url":null,"abstract":"<div><p>Pure-phase LiAl<sub>5</sub>O<sub>8</sub>:Cr<sup>3+</sup> leaf-like particles were synthesized by combustion synthetic route at various concentrations. Both sharp peaks and broad emission photoluminescence are apparent even at room temperature. The most optimum doping concentration of 0.75 % based on lifetime and emission intensity was chosen. Peaks of different configurations were separated by deconvolution from 120 K to 680 K, where <sup>4</sup>T<sub>2</sub> peak increases in temperature to the expense of the sharp <sup>2</sup>E emissions, giving luminescence intensity ratio (LIR) relative sensitivity of 2.8 % K<sup>−1</sup> at room temperature. Large separation between Cr<sup>3+</sup> R lines marks their LIR as perspective at low temperatures. At high temperatures luminescence lifetime provided for 0.8 % K<sup>−1</sup> sensitivity, while line-shift and bandwidth methods are not sensitive enough for thermometric applications. Deconvolution of peaks enabled for 10 % more precise estimation of Debye temperature (679 K).</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141023174","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}
Yun-Chae Jeong , Minhwan Kim , Seong-Hyub Lee , Jun-Young Chang , Sug-Bong Choe , Soong-Geun Je , Duck-Ho Kim
{"title":"A novel approach for measuring large magnetic anisotropy energy with a limited magnetic field range","authors":"Yun-Chae Jeong , Minhwan Kim , Seong-Hyub Lee , Jun-Young Chang , Sug-Bong Choe , Soong-Geun Je , Duck-Ho Kim","doi":"10.1016/j.cap.2024.05.012","DOIUrl":"10.1016/j.cap.2024.05.012","url":null,"abstract":"<div><p>Here we propose an experimental method for determining the magnetic anisotropy field in ferromagnetic materials. Our method involves examining the small-angle variation of spontaneous magnetization by the external magnetic field and interpreting the experimental result within the framework of the Stoner-Wohlfarth model applicable to ferromagnetic materials. This method allows for the extrapolation of magnetic anisotropy fields, even when they surpass conventional measurement limits. As a result, a broad range of magnetic anisotropy fields can be ascertained using a single experimental setup. Our proposed method serves as a versatile tool for analyzing large magnetic anisotropy energy which is an important parameter for future spintronic devices.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.sciencedirect.com/science/article/pii/S1567173924001081/pdfft?md5=23eab2dd1bf5c9805d5df2cba6868113&pid=1-s2.0-S1567173924001081-main.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141034335","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}
{"title":"Preface to the special issue of ICAMD2023","authors":"Joon Jang Ph.D. (Guest Editor of ICAMD2023)","doi":"10.1016/j.cap.2024.05.008","DOIUrl":"10.1016/j.cap.2024.05.008","url":null,"abstract":"","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141047466","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}
{"title":"Experimental and theoretical methods of practicing current applied physics, Part I","authors":"Gee Yeong Kim, Geol Moon, Woo Seok Choi","doi":"10.1016/j.cap.2024.05.010","DOIUrl":"10.1016/j.cap.2024.05.010","url":null,"abstract":"","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141040932","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}
{"title":"Proper spectroscopic analysis of transition metal oxides using ex-situ X-ray photoelectron spectroscopy","authors":"Dooyong Lee , Sungkyun Park","doi":"10.1016/j.cap.2024.05.007","DOIUrl":"https://doi.org/10.1016/j.cap.2024.05.007","url":null,"abstract":"<div><p>Transition metal oxides (TMOs) are one of the most exciting classes of materials due to their emergent phenomena over the past few decades. In general, the emergent phenomena in TMOs are driven by the chemical state of the TMOs. Therefore, it is vital to understand the correlation between the chemical state and the physical properties of the TMOs. X-ray photoelectron spectroscopy (XPS) is the most widely used method for analyzing the chemical state of materials. However, when using XPS to investigate the chemical properties of TMOs, a lack of clear theoretical explanations for the interpretation, including discussions of oxygen vacancies, inaccurate XPS peak fitting, and inaccurate calibration, often leads to misinterpretation. In this review, we present a brief introduction to XPS, the peak fitting/deconvolution method for analyzing the chemical state of TMOs, and several case studies that use XPS to correlate the chemical state and the physical properties of TMOs.</p></div>","PeriodicalId":11037,"journal":{"name":"Current Applied Physics","volume":null,"pages":null},"PeriodicalIF":2.4,"publicationDate":"2024-05-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"140950178","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}