The structure and magnetoelastic properties of the Fe-based amorphous alloy with Hf addition

Lesz, S.; Szewczyk, Roman; Szewieczek, D.; Bieńkowski, A.

doi:10.1016/j.jmatprotec.2004.07.133

Cited by 16 publications

(16 citation statements)

References 16 publications

(16 reference statements)

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“…In addition these materials demonstrate almost zero magnetostriction and, depending on the chemical composition, relatively high saturation magnetization. Another group of materials which can be successfully used in electrotechnics are the nanocrystalline alloys, manufactured from amorphous alloys by a proper heat treatment [16][17][18][19][20]. However, it is not always the case, that introducing tiny crystalline grains of nanometric size into amorphous solid positively affects its magnetic properties, and in particular magnetostriction phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

Szota

2017

Archives of Metallurgy and Materials

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The paper presents the research results for the Fe 78 Co 2 Si 9 B 11 amorphous alloy, and after the process of annealing resulting only in the relaxation of the material. The structure relaxations occurring in the volume of test samples lead to the changes in their magnetic and mechanic properties. Therefore the studies on the effect of the structure defects on the properties of these type of materials are important. Understanding the processes occurring during the magnetizing of amorphous alloys can be helpful in the design of modern functional materials for special purposes. The main purpose of this elaboration was to determine the effect of the amorphous structure defects in the state after solidification and after heat treatment on the changes in the magnetizing process and in such parameters as the saturation magnetization and the coercivity field.

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Section: Introductionmentioning

confidence: 99%

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

Szota

2017

Archives of Metallurgy and Materials

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“…2,3 There are many publications about the methods of shaping the surface and structure of materials to improve their properties. [4][5][6][7][8][9][10][11][12] Some materials exhibit a property known as the photovoltaic effect that causes them to absorb photons of light and excite an electron or other charge carrier to a higher-energy state. When these free electrons are captured, an electric current results that can be used as electricity.…”

Section: Introductionmentioning

confidence: 99%

A carbon-nanotubes counter electrode for flexible dye-sensitized solar cells

Drygała¹,

Dobrzański²,

Prokopowicz³

et al. 2017

Mater. Tehnol.

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Dye-sensitized solar cells (DSSCs) are an attractive alternative to conventional crystalline silicon solar cells because of their low-cost, relatively high photon-to-current conversion efficiency for low energy consumption and simple fabrication process. The dye-sensitized solar cell consists of the following components: a photoanode, a dye, an electrolyte, and a counter electrode. The counter electrode is a crucial element, in which the triiodide is reduced to iodide by electrons flowing through the external circuit. Platinum is the most used material for a counter electrode in DSSCs, due to its electrocatalytic activity towards I3 -reduction. However, the use of platinum may not be a suitable option because of its high cost. Additionally, to achieve widespread application of next-generation photovoltaics, it is important to develop flexible devices. Given this, the paper presents the influence of mechanical stress arising from the bending of a flexible substrate on the morphology, the resistance of counter electrode based on carbon nanotubes as well as the electrical properties of dye-sensitized solar cells. Keywords: photovoltaics, dye-sensitized solar cells, flexible substrates, counter electrode, carbon nanotubes Fleksibilne tankoslojne barvno ob~utljive son~ne celice (angl. DSSCs) so privla~na alternativa konvencionalnim kristalnim silicijevim son~nim celicam zaradi nizke cene in relativno visoke u~inkovitosti pretvorbe foton-tok, z nizko porabo energije in enostavnim postopkom procesom proizvodnje izdelave. Tankoplastna son~na celica je sestavljena iz naslednjih komponent: fotoanode, barvila, elektrolita in tokovne elektrode. Tokovna elektroda je klju~ni element, na kateri se trijodid reducira na jodid z elektroni, ki te~ejo skozi zunanji tokokrog. V solarnih celicah je platina najpogosteje uporabljan material za tokovne elektrode zaradi svoje elektrokataliti~ne aktivnosti (redukcija I3 -ionov). Zaradi visoke cene pa uporaba platine vendarle ni optimalna izbira. Torej, da bi dosegli {iroko uporabo naslednjih generacij fotovoltaike je pomembno razvijati fleksibilne naprave.^lanek predstavlja vpliv mehanskih napetosti zaradi upogibanja fleksibilnega substrata na morfologijo in odpornost tokovne elektrode iz ogljikovih nanocevk, kot tudi elektri~ne lastnosti tankoslojne son~ne celice. Klju~ne besede: fotovoltaika, tankoslojne barvno ob~utljive son~ne celice, fleksibilni substrati, tokovna elektroda iz ogljikovih nanocevk

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“…There are many publications about the methods of shaping the surface and structure of materials to improve their properties. [16][17][18] Carbon nanotubes conduct electricity. They are almost transparent, flexible and strong, which makes them the ideal material for transparent electrodes for DSSC.…”

Section: Introductionmentioning

confidence: 99%

Characteristics of dye-sensitized solar cells with carbon nanomaterials

Dobrzański¹,

Mucha²,

Prokopowicz³

et al. 2016

Mater. Tehnol.

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Dye-sensitized photovoltaic cells consisting of a layered structure have been developed for 20 years and they are a basis for the new development trend of photovoltaics. One of the examined aspects of their application is building-integrated photovoltaics. Dye-sensitized photovoltaic cells (DSSCs) were developed by Michael Grätzel and Brian O'Regan in 1991 and have been intensively examined ever since. Because of their low production costs, easy transfer, the relatively high efficiency of the photon conversion to the current and an easy production technology, dye-sensitized cells might represent an alternative to silicon cells. Basically, a dye-sensitized photovoltaic cell consists of five elements: a mechanical base covered with a layer of transparent conductive oxides (TCOs), a semiconductor film, e.g., TiO2, dye absorbed on the semiconductor's surface, an electrolyte including a redox carrier, and a counter electrode suitable to regenerate a redox carrier, e.g., platinum. As part of this work we produced dye-sensitized solar cells. First, the glass with transparent conductive oxides was thoroughly cleaned. Then, the glass with TCO was coated with a layer of TiO2 using the doctor-blade technique, and fired in a furnace at 450°C. The plate prepared in this way was then sensitized in a ruthenium-based dye. The counter electrode was obtained by applying it on the glass with TCO carbon nanomaterials, including graphite, carbon black and carbon nanotubes. The photo-anode and the counter electrode were combined and between them was injected the redox electrolyte. This paper provides an analysis of the microstructure and electrical properties of nanostructural coatings with the carbon nano-element of the integrated dye-sensitized photovoltaic cells. Keywords: dye-sensitized solar cell, carbon elements, counter electrode Na fiksirano barvo ob~utljive fotovoltai~ne celice sestojijo iz plastovite strukture in so zadnjih dvajset let tematika razvoja na tem podro~ju, predstavljajo namre~nov razvojni trend v fotovoltaiki. Eden od raziskovanih vidikov njihove uporabe je fotovoltaika, integrirana v zgradbe. Na fiksirano barvo ob~utljive fotovoltai~ne celice (DSSC), sta razvila Michael Grätzel in Brian O'Regan leta 1991 in so od tedaj pogost predmet raziskav. Zaradi nizkih stro{kov njihove proizvodnje, enostavne prenosljivosti, relativno visoko u~inkovite konverzije fotonov v tok in enostavne proizvodnje, so na fiksirano barvo ob~utljive celice lahko nadomestek silicijevim celicam. V osnovi na fiksirano barvo ob~utljive fotovoltai~ne celice sestojijo iz 5 elementov: mehanska podlaga je prekrita s plastjo prosojnih, prevodnih oksidov TCO, polprevodnega sloja, npr. TiO2, fiksne barve absorbirane na povr{ini polprevodnika, elektrolita z vklju~no redoks nosilcem nasprotna elektroda, ki je sposobna regeneracije redoks nosilca, kot je npr. platina. Kot del tega dela, so bile izdelane na fiksirano barvo ob~utljive solarne celice. Najprej je bilo steklo s presevnimi prevodnimi oksidi dobro o~i{~eno. Nato je bilo steklo s TCO, z upora...

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The structure and magnetoelastic properties of the Fe-based amorphous alloy with Hf addition

Cited by 16 publications

References 16 publications

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

Effect of structural relaxations within the amorphous structure on the magnetic properties of amorphous tapes from FeCoB family

A carbon-nanotubes counter electrode for flexible dye-sensitized solar cells

Characteristics of dye-sensitized solar cells with carbon nanomaterials

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