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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 ...
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Article
Magnetic texturing of xenon-ion irradiated nickel films
Thin polycrystalline Ni films of typically 75 nm thickness evaporated on Si or SiO2 substrates were irradiated with 30-900 keV Xe-ions to fluences of 2.5 x 1013 - 4 x 1014/cm2. The magnetization of the Ni films w...
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Article
Variation of the mechanical properties of pulsed laser deposited PMMA films during annealing
The structural and mechanical properties of polymethyl methacrylate (PMMA) thin films produced by pulsed laser deposition in ultra-high vacuum were investigated by infrared spectroscopy, electron microscopy, s...
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Article
MOMS and PAC studies of ion-irradiated ferromagnetic films
Thin polycrystalline films of Ni, Fe and Co, tens of nanometers thick, have been irradiated with Ar, Kr, Xe and/or Au ions to fluences of 1013 to 1016 ions/cm2. The magnetic texture induced or modified by the imp...
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Article
Laser hydriding of crystalline and amorphous silicon
Crystalline and ion-beam-amorphized silicon samples were irradiated with a pulsed nanosecond excimer laser in a pure hydrogen atmosphere. The hydrogen concentration was determined via the 1H(15N,αγ)12C nuclear re...
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Article
Ion-beam mixing in Fe/Si bilayers by singly and highly charged ions: evolution of phases, spike mechanism and possible effects of the ion-charge state
Silicide formation and ion beam mixing of Fe/Si bilayers due to Ar-, Xe- and Au-ion irradiations at room and liquid-nitrogen temperatures were investigated. For the study of silicide phase formation, the Fe/Si...
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Chapter
Cems Studies of Laser Treated Disordered Amorphous and Nanocrystalline Alloys
Conversion electrons provide information from a depth of about 150 nm for most iron rich alloys. Thus, surface effects can be effectively studied by means of Conversion Electron Mössbauer Spectroscopy (CEMS). ...
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Chapter
Mössbauer Investigation of Surface Processing by Pulsed Laser Irradiation in Reactive Atmospheres
Irradiations of iron (Armco, Fe > 99.85%) substrates in controlled gaseous atmospheres (nitrogen and methane) have been performed with nanosecond pulses of an excimer laser, leading to the formation of nitride...