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Article
Open AccessUltrasonic excitation during press-fit joining of electrical contacts
Ultrasonic excitation of pins during a press-in process can reduce the press-in force. There are various theories describing the reason for the force reduction. In this paper, the printed circuit board (PCB) w...
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Article
Mössbauer spectroscopy of ZnxMg1-x Fe2O4 (0 ≤ x ≤ 0.74) nanostructures crystallized from borate glasses
Glasses in the system 51.7 B2O3/9.3 K2O/1 P2O5/10.4 Fe2O3/(27.6 − y) MgO/y ZnO (with y = 0, 1, 2.5, 5, 7.5, 10, 13.8, and 20) were prepared by the conventional melt quenching method. The glass samples were therma...
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Article
El Ventorrillo, a paleostructure of Popocatépetl volcano: insights from geochronology and geochemistry
Volcán Popocatépetl (México) was constructed over the remains of a volcanic paleostructure. Based on fieldwork, 40Ar/39Ar dating, U-Pb dating, and geochemistry, we have determined the age, chemistry, and location...
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Article
Electrochemical performance of nanoporous Si as anode for lithium ion batteries in alkyl carbonate and ionic liquid-based electrolytes
Nanoporous Si was obtained by means of metal-assisted chemical etching. Li ion insertion–extraction was tested by voltammetric and galvanostatic electrochemical cycling in conventional 1 M LiPF6 ethylene carbonat...
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Article
Concentration Quenching of Tb3+ Doped SiC:H and AlN Thin Films in Photoluminescence and Cathodoluminescence Measurements
We present a systematic study of photo- and cathodoluminescence measurements in the visible of Terbium doped SiC:H and AlN thin films. The Terbium atomic concentrations vary from 0.9 to 10% for the SiC:H and f...
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Chapter
Polyelectrolyte Multilayers
The films known as polyelectrolyte multilayers are made by alternating deposition of polyanions (negatively charged polymers) and polycations (positively charged polymers). The development of these films, inve...
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Chapter
Surface Methods
A biosensor is an analytical device which physically associates a biological receptor and a transducer [1]. The transducer transforms the interaction between the receptor and its target into an interpretable s...
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Article
Argon and krypton ion-induced changes in permalloy thin films
The effects of 75-keV Ar and 100-keV Kr ion irradiations of 72-nm thin DC-sputtered permalloy (Ni81Fe19) films on Si(100) wafers were studied at fluences of up to 1016 ions/cm2. The changes of the structural and ...
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Article
Open AccessMicrostructure of TiN coatings synthesized by direct pulsed Nd:YAG laser nitriding of titanium: Development of grain size, microstrain, and grain orientation
Pure titanium was irradiated by pulsed Nd:YAG laser irradiation in nitrogen atmosphere. As a result, nitrogen uptake and diffusion occurred and a TiN layer was synthesized at the titanium surface. These TiN co...
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Article
The influence of rf plasma time on the carbonitriding treatment of titanium
Inductively coupled radio frequency plasma surface treatment was applied to commercially pure titanium sheets. The goal was to increase the efficiency of the carbonitriding process, i.e., to decrease the plasm...
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Article
Effect of annealing in an external magnetic field on the magnetic texture of Mo-containing nanocrystalline alloys
The magnetic texture of (Fe1−x Cox)76Mo8Cu1B15 (x = 0, 0.5) nanocrystalline alloys is studied for different amounts of nanocrystalline grains. The originally amorphous alloys were annealed in exte...
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Article
Ion-beam induced changes in magnetic and microstructural properties of thin iron films
Changes in magnetic and structural properties of 60–82 nm iron films induced by heavy-ion implantation were studied using the magneto-optical Kerr effect, Mössbauer spectroscopy, Rutherford backscattering sp...
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Article
Synthesis of highly oriented TiNx coatings by free-electron laser processing of titanium in nitrogen gas
Titanium substrates were irradiated in pure nitrogen gas by means of a free-electron laser. The treatment resulted in the formation of δ-TiNx coatings, with surface stoichiometry x≈1 and thickness of about 15 μm....
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Chapter and Conference Paper
Xenon-ion Induced Magnetic and Structural Modifications of Ferromagnetic Alloys
Thin polycrystalline films of permalloy (Ni79Fe21) and permendur (Co50Fe50) have been irradiated with Xe-ions to fluences of 1014−1016 ions/cm2. Ion-induced structural and magnetic modifications have been measure...
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Article
Xenon-ion Induced Magnetic and Structural Modifications of Ferromagnetic Alloys
Thin polycrystalline films of permalloy (Ni79Fe21) and permendur (Co50Fe50) have been irradiated with Xe-ions to fluences of 1014–1016 ions/cm2. Ion-induced structural and magnetic modifications have been measure...
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Chapter and Conference Paper
Magnetic Texturing of Xenon-Irradiated Iron Films Studied by Magnetic Orientation Mössbauer Spectroscopy
Modifications of magnetic properties upon heavy-ion irradiation have been recently investigated for films of ferromagnetic 3d-elements (Fe, Ni, Co) and alloys (permendur, permalloy), in relation to changes of ...
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Chapter and Conference Paper
Heavy Ion Irradiated Ferromagnetic Films: The Cases of Cobalt and Iron
Polycrystalline, e-gun deposited Co, Fe and Co/Fe films, tens of nanometers thick, have been irradiated with Ne, Kr, Xe and/or Fe ions to fluences of up to 5 × 1016 ions/cm2. Changes in the magnetic texture induc...
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Article
Heavy Ion Irradiated Ferromagnetic Films: The Cases of Cobalt and Iron
Polycrystalline, e-gun deposited Co, Fe and Co/Fe films, tens of nanometers thick, have been irradiated with Ne, Kr, Xe and/or Fe ions to fluences of up to 5 × 1016 ions/cm2. Changes in the magnetic texture induc...
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Article
Nitrogen irradiation of Fe/Si bilayers: nitride versus silicide phase formation
In the course of a systematic investigation of heavy ion-irradiated Fe/Si layers, we have studied atomic transport and phase formation induced by 22-keV 14N2+ ion implantation in 57Fe(30 nm)/Si bilayers at high f...
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Article
Magnetic Texturing of Xenon-Irradiated Iron Films Studied by Magnetic Orientation Mössbauer Spectroscopy
Modifications of magnetic properties upon heavy-ion irradiation have been recently investigated for films of ferromagnetic 3d-elements (Fe, Ni, Co) and alloys (permendur, permalloy), in relation to changes of ...
