Special Issue "Advance in Crystalline Thin Wires"

A special issue of Crystals (ISSN 2073-4352). This special issue belongs to the section "Crystal Engineering".

Deadline for manuscript submissions: closed (10 June 2017)

Special Issue Editor

Guest Editor
Prof. Dr. Arkady Zhukov

Dpto. de Fís. Mater., UPV/EHU San Sebastián 20018 and IKERBASQUE, Basque Foundation for Science, 48011 Bilbao, Spain
Website | E-Mail
Interests: magnetic materials; hysteretic magnetic properties; magnetic wires; amorphous nano-crystalline and granular magnetic materials; magneto-electric effects; transport properties; giant magneto-impedance effect; magneto-resistance effect; magnetic sensors

Special Issue Information

Dear Colleagues,

Different families of metallic wires, exhibiting outstanding magnetic and mechanical properties, such as excellent magnetic softness, Giant magnetoimpedance (GMI) effect, magnetic bistability and related fast magnetic domain walls dynamics, have attracted growing attention of researchers over the last few decades. Most attention, up to now, has been paid to unusual magnetic properties, suitable for various magnetic sensors transducers, actuators, resonators, or energy harvesters applications, to name a few. Development of various rapid quenching techniques since the 1980s has allowed the obtaining of novel metastable materials with crystalline, amorphous, nanocrystalline, granular structures with new combinations of physical properties (mechanical, magnetic, electrochemical, etc.). The physical properties of different families of wires are related, to a great extent, to their microstructures, which depend on their chemical compositions, fabrication, and processing parameters.

Consequently, the latest advances in the technology of different families of wires are the main reason for producing the current Special Issue.

We invite investigators to submit papers that discuss the development of different families of metallic wires exhibiting outstanding physical properties related to microstructure and on correlation of structure and physical properties of wires. These crystal systems include, but are not limited to, granular, nanocrystalline, microcrystalline wires on phase transformations in wires, etc.

The potential topics include, but, again, are not limited to:

  • Crystallization process in wires
  • Stress relaxation in wires
  • Granular structures and related properties
  • Phase transformations in wires. Heusler type wires
  • Nanocrystallization in wires
  • Correlation of microstructure and properties of wires
  • Defects in wires
  • Kinetics of crystallization in wires
  • Internal stresses in wires
  • Physical properties (magnetic, mechanical, etc.) and its optimization in wires
  • Wire Nanostructures
  • Composite wires and composites from wires

Prof. Dr. Arkady Zhukov
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Crystals is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 1000 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • crystallization
  • stress relaxation
  • granular structures
  • phase transformations
  • nanocrystallites
  • defects
  • physical properties

Published Papers (7 papers)

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Research

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Open AccessArticle Evaluation of Thin Copper Wire and Lead-Free Solder Joint Strength by Pullout Tests and Wire Surface Observation
Crystals 2017, 7(8), 255; doi:10.3390/cryst7080255
Received: 13 July 2017 / Revised: 13 August 2017 / Accepted: 18 August 2017 / Published: 20 August 2017
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Abstract
Copper wires have been attracting much attention for Large Scale Integration (LSI) bonding because of their excellent mechanical and electrical properties, in addition to their low material cost. The ends of these wires are usually joined to pads or through-holes on a printed
[...] Read more.
Copper wires have been attracting much attention for Large Scale Integration (LSI) bonding because of their excellent mechanical and electrical properties, in addition to their low material cost. The ends of these wires are usually joined to pads or through-holes on a printed circuit board, and lead-free soldering is one of the popular bonding methods. Since the deformation resistance of solder is lower than that of copper, especially in slow deformation due to creep, the strain tends to be increased in the solder and concentrated near the copper/solder joint interface. Thus, fracture frequently occurs at this interface and may influence the quality of the product. It is therefore important to evaluate the bonding strength of thin copper wire and lead-free solder. In this paper, pullout tests of thin copper wire from lead-free solder were carried out, and the pullout behavior of the wires was observed. The bonding strength was evaluated based on the actual bonded area on the copper wire surface. Finally, the strength of the thin copper wire/solder joint was summarized using the shear and tensile strengths of the copper/solder interface as well as the tensile strength of the copper wire. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Open AccessCommunication Self-Assembled Microwires of Terephthalic Acid and Melamine
Crystals 2017, 7(8), 236; doi:10.3390/cryst7080236
Received: 12 July 2017 / Revised: 26 July 2017 / Accepted: 26 July 2017 / Published: 31 July 2017
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Abstract
Self-assembled microwires of terephthalic acid (TPA) and melamine are prepared through the evaporation of water in a solution mixture of TPA and melamine. The microwires were characterized by using scanning electron microscope (SEM), attenuated total reflection infrared (ATR-IR) spectra, and cross-polarized optical microscopy
[...] Read more.
Self-assembled microwires of terephthalic acid (TPA) and melamine are prepared through the evaporation of water in a solution mixture of TPA and melamine. The microwires were characterized by using scanning electron microscope (SEM), attenuated total reflection infrared (ATR-IR) spectra, and cross-polarized optical microscopy (CPOM). The TPA•M microwires showed semi-conductive properties. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Open AccessArticle Fabrication of Nano-Micro Hybrid Structures by Replication and Surface Treatment of Nanowires
Crystals 2017, 7(7), 215; doi:10.3390/cryst7070215
Received: 16 June 2017 / Revised: 7 July 2017 / Accepted: 7 July 2017 / Published: 11 July 2017
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Abstract
Nanowire structures have attracted attention in various fields, since new characteristics could be acquired in minute regions. Especially, Anodic Aluminum Oxide (AAO) is widely used in the fabrication of nanostructures, which has many nanosized pores and well-organized nano pattern. Using AAO as a
[...] Read more.
Nanowire structures have attracted attention in various fields, since new characteristics could be acquired in minute regions. Especially, Anodic Aluminum Oxide (AAO) is widely used in the fabrication of nanostructures, which has many nanosized pores and well-organized nano pattern. Using AAO as a template for replication, nanowires with a very high aspect ratio can be fabricated. Herein, we propose a facile method to fabricate a nano-micro hybrid structure using nanowires replicated from AAO, and surface treatment. A polymer resin was coated between Polyethylene terephthalate (PET) and the AAO filter, roller pressed, and UV-cured. After the removal of aluminum by using NaOH solution, the nanowires aggregated to form a micropattern. The resulting structure was subjected to various surface treatments to investigate the surface behavior and wettability. As opposed to reported data, UV-ozone treatment can enhance surface hydrophobicity because the UV energy affects the nanowire surface, thus altering the shape of the aggregated nanowires. The hydrophobicity of the surface could be further improved by octadecyltrichlorosilane (OTS) coating immediately after UV-ozone treatment. We thus demonstrated that the nano-micro hybrid structure could be formed in the middle of nanowire replication, and then, the shape and surface characteristics could be controlled by surface treatment. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Open AccessArticle Ni-Co Alloy and Multisegmented Ni/Co Nanowire Arrays Modulated in Composition: Structural Characterization and Magnetic Properties
Crystals 2017, 7(3), 66; doi:10.3390/cryst7030066
Received: 12 January 2017 / Revised: 19 February 2017 / Accepted: 22 February 2017 / Published: 26 February 2017
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Abstract
Design of novel multisegmented magnetic nanowires can pave the way for the next generation of data storage media and logical devices, magnonic crystals, or in magneto-plasmonics, among other energy conversion, recovery, and storage technological applications. In this work, we present a detailed study
[...] Read more.
Design of novel multisegmented magnetic nanowires can pave the way for the next generation of data storage media and logical devices, magnonic crystals, or in magneto-plasmonics, among other energy conversion, recovery, and storage technological applications. In this work, we present a detailed study on the synthesis, morphology, structural, and magnetic properties of Ni, Co, and Ni-Co alloy and multisegmented Ni/Co nanowires modulated in composition, which were grown by template-assisted electrodeposition employing nanoporous anodic aluminum oxide as patterned templates. X-ray diffraction, and scanning and high-resolution transmission electron microscopies allowed for the structural, morphological, and compositional investigations of a few micrometers long and approximately 40 nm in diameter of pure Ni and Co single elements, together with multisegmented Ni/Co and alloyed Ni-Co nanowires. The vibrating sample magnetometry technique enabled us to extract the main characteristic magnetic parameters for these samples, thereby evaluating their different anisotropic magnetic behaviors and discuss them based on their morphological and structural features. These novel functional magnetic nanomaterials can serve as potential candidates for multibit magnetic systems in ultra-high-density magnetic data storage applications. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Open AccessArticle Ultrathin Nanocrystalline Magnetic Wires
Crystals 2017, 7(2), 48; doi:10.3390/cryst7020048
Received: 2 December 2016 / Revised: 30 January 2017 / Accepted: 4 February 2017 / Published: 10 February 2017
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Abstract
The magnetic characteristics of FINEMET type glass-coated nanowires and submicron wires are investigated by taking into account the structural evolution induced by specific annealing all the way from a fully amorphous state to a nanocrystalline structure. The differences between the magnetic properties of
[...] Read more.
The magnetic characteristics of FINEMET type glass-coated nanowires and submicron wires are investigated by taking into account the structural evolution induced by specific annealing all the way from a fully amorphous state to a nanocrystalline structure. The differences between the magnetic properties of these ultrathin wires and those of the thicker glass-coated microwires and “conventional” wires with similar structures have been emphasized and explained phenomenologically. The domain wall propagation in these novel nanowires and submicron wires, featuring a combination between an amorphous and a crystalline structure, has also been studied, given the recent interest in the preparation and investigation of new materials suitable for the development of domain wall logic applications. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Review

Jump to: Research

Open AccessReview Technology, Preparation and Properties of the Cast Glass-Coated Magnetic Microwires
Crystals 2017, 7(6), 136; doi:10.3390/cryst7060136
Received: 9 January 2017 / Revised: 3 May 2017 / Accepted: 5 May 2017 / Published: 29 May 2017
Cited by 1 | PDF Full-text (2824 KB) | HTML Full-text | XML Full-text
Abstract
Magnetic properties of cast amorphous and nanocrystalline microwires have been reviewed considering their potential application. Microwires were produced from Co Fe Mn Cr Cu B and Si using the Taylor–Ulitovsky method. Technological aspects of the Taylor–Ulitovsky method for fabrication of glass-coated microwire with
[...] Read more.
Magnetic properties of cast amorphous and nanocrystalline microwires have been reviewed considering their potential application. Microwires were produced from Co Fe Mn Cr Cu B and Si using the Taylor–Ulitovsky method. Technological aspects of the Taylor–Ulitovsky method for fabrication of glass-coated microwire with different structure are analyzed. Magnetic microwires demonstrate a large variety of magnetic behaviors, which is important for sensing applications. Depending on the chemical composition of the metallic core, for Co-, Fe- and Ni-based composition, the microwires’ properties are very different. The geometrical characteristics (diameter of metallic core and thickness of the glass) of the microwire depend on the physical properties of a metallic composition and of glass and the parameters of the heating inductor and the speed of obtaining a microwire. The diameter of metallic core in these microwires can range from 0.5 to 70 μm, and their thickness of the glass can vary from 1 to 50 μm. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Open AccessReview Correlation of Crystalline Structure with Magnetic and Transport Properties of Glass-Coated Microwires
Crystals 2017, 7(2), 41; doi:10.3390/cryst7020041
Received: 20 October 2016 / Revised: 27 January 2017 / Accepted: 28 January 2017 / Published: 8 February 2017
Cited by 6 | PDF Full-text (11560 KB) | HTML Full-text | XML Full-text
Abstract
We overviewed the correlation between the structure, magnetic and transport properties of magnetic microwires prepared by the Taylor-Ulitovsky method involving rapid quenching from the melt and drawing of the composite (metallic core, glass coated) wire. We showed that this method can be useful
[...] Read more.
We overviewed the correlation between the structure, magnetic and transport properties of magnetic microwires prepared by the Taylor-Ulitovsky method involving rapid quenching from the melt and drawing of the composite (metallic core, glass coated) wire. We showed that this method can be useful for the preparation of different families of magnetic microwires: soft magnetic microwires displaying Giant magnetoimpedance (GMI) effect, semi-hard magnetic microwires, microwires with granular structure exhibiting Giant Magnetoresistance (GMR) effect and Heusler-type microwires. Magnetic and transport properties of magnetic microwires depend on the chemical composition of metallic nucleus and on the structural features (grain size, precipitating phases) of prepared microwires. In all families of crystalline microwires, their structure, magnetic and transport properties are affected by internal stresses induced by the glass coating, depending on the quenching rate. Therefore, properties of glass-coated microwires are considerably different from conventional bulk crystalline alloys. Full article
(This article belongs to the Special Issue Advance in Crystalline Thin Wires)
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Planned Papers

The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.

Title: Co-Ni alloy and multisegmented Co/Ni nanowire arrays modulated in composition: structural characterization and magnetic properties
Authors: M. Méndez, S. González, V. Vega, J.M. Teixeira, V.M. Prida, C. Luna, B. Hernando1
Abstract: Design of advanced cylindrical magnetic nanowires (NWs) can pave the way for the next generation of high-density data storage and logical devices, magnonic crystals or in magnetoplasmonics, among other technological applications. In this work, we present a detailed study on the synthesis, morphology, structural and magnetic properties of Co, Ni, Co-Ni alloyed and multisegmented Co/Ni NWs modulated in composition, which were grown by template-assisted electrodeposition by employing nanoporous anodic aluminum oxide (AAO) as patterned templates. X-ray diffraction, scanning and high resolution transmission electron microscopies allowed for the structural, morphological and compositional investigations on few micrometers long and approximately 40 nm in diameter of pure Co and Ni, together multisegmented Co/Ni and alloyed Co-Ni NWs. Using a vibrating sample magnetometer enabled us to extract the characteristic magnetic parameters for these samples, thereby evaluating their different magnetic anisotropic behavior, and discuss them basing on their morphological and structural features.

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