Faupel, Jörg

[["dc.bibliographiccitation.firstpage","137"],["dc.bibliographiccitation.issue","1-4"],["dc.bibliographiccitation.journal","HYPERFINE INTERACTIONS"],["dc.bibliographiccitation.lastpage","143"],["dc.bibliographiccitation.volume","158"],["dc.contributor.author","Mueller, Gerhard A."],["dc.contributor.author","Lieb, Klaus-Peter"],["dc.contributor.author","Carpene, Ettore"],["dc.contributor.author","Zhang, K."],["dc.contributor.author","Schaaf, Peter"],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.date.accessioned","2018-11-07T10:52:38Z"],["dc.date.available","2018-11-07T10:52:38Z"],["dc.date.issued","2004"],["dc.description.abstract","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 their microstructure. Here we report on Xe-ion irradiation of a highly textured iron film prepared via pulsed-laser deposition on a MgO(100) single crystal and containing a thin Fe-57 marker layer for magnetic orientation Mossbauer spectroscopy (MOMS). We compare the results with those obtained for a polycrystalline Fe/Si(100) sample produced by electron evaporation and premagnetized before Xe-irradiation in a 300 Oe external field. Characterization of the samples also included magneto-optical Kerr effect (MOKE), Rutherford backscattering spectroscopy (RBS) and X-ray diffraction (XRD)."],["dc.identifier.doi","10.1007/s10751-005-9022-6"],["dc.identifier.isi","000235281400023"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49159"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.publisher.place","Dordrecht"],["dc.relation.conference","Joint Meeting of the 13th International Conference on Hyperfine Interactions/17th International Symposium on Nuclear Quadrupole Interactions (HFI/NQI 2004)"],["dc.relation.eventlocation","Bonn, GERMANY"],["dc.relation.issn","0304-3843"],["dc.title","Magnetic texturing of xenon-irradiated iron films studied by magnetic orientation Mossbauer spectroscopy"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","4273"],["dc.bibliographiccitation.issue","7"],["dc.bibliographiccitation.journal","Journal of Applied Physics"],["dc.bibliographiccitation.lastpage","4278"],["dc.bibliographiccitation.volume","94"],["dc.contributor.author","Scharf, Thorsten"],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Sturm, K."],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.date.accessioned","2018-11-07T10:35:49Z"],["dc.date.available","2018-11-07T10:35:49Z"],["dc.date.issued","2003"],["dc.description.abstract","In situ stress measurements were performed on polycrystalline Permalloy and Ag thin films laser deposited in ultrahigh vacuum (UHV) and at different Ar gas pressures. In UHV, when the kinetic energy of the particles is high (about 100 eV), in the initial growth stage the stress is dominated by the surface energy and intermixing effects. With increasing deposition time, capillary-induced compressive growth stress is observed. Additionally, the film stress is strongly influenced by the growth mode (island growth or layer-by-layer growth). In the case of Volmer-Weber growth, island zipping generates tensile stress, as soon as island impingement and coalescence occurs. In the late stages, compressive stress due to shot-peening and implantation dominates the measurements, similar as in sputtered films. The depth of influence of the impinging particles is determined to be about 3 nm. With increasing Ar pressure (or at low laser fluence) the impinging particles are slowed down and implantation or intermixing effects are diminished. This is accompanied by changes in the film morphology and texture. At high Ar pressures a compressive-to-tensile transition occurs and the laser deposited films become more comparable to evaporated samples with an open structure. These results can be understood by a combination of stress formation and relaxation effects below the film surface. (C) 2003 American Institute of Physics."],["dc.identifier.doi","10.1063/1.1602565"],["dc.identifier.isi","000185420900008"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/45181"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0021-8979"],["dc.title","Intrinsic stress evolution in laser deposited thin films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1587"],["dc.bibliographiccitation.issue","4-6"],["dc.bibliographiccitation.journal","Applied Physics A"],["dc.bibliographiccitation.lastpage","1589"],["dc.bibliographiccitation.volume","79"],["dc.contributor.author","Scharf, T."],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Sturm, K."],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.date.accessioned","2018-11-07T10:45:44Z"],["dc.date.available","2018-11-07T10:45:44Z"],["dc.date.issued","2004"],["dc.description.abstract","The changes in the properties of laser deposited metal thin films were investigated in different inert gas atmospheres (He, Ne, Ar and Xe). With increasing inert gas pressure, the reduction of particle energy is accompanied by a strong increase of the deposition rate (especially in He atmosphere), a transition from compressive to tensile stress, and changes in structure and texture. This is explained by a reduction of surface mobility of the deposited particles, a decrease of implantation, resputtering and shot-peening effects. At high gas pressures, deposition conditions similar to sputtering or even thermal deposition are obtained."],["dc.identifier.doi","10.1007/s00339-004-2855-z"],["dc.identifier.isi","000222766100205"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47575"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0947-8396"],["dc.title","Pulsed laser deposition of metals in various inert gas atmospheres"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1233"],["dc.bibliographiccitation.issue","4-6"],["dc.bibliographiccitation.journal","Applied Physics A"],["dc.bibliographiccitation.lastpage","1235"],["dc.bibliographiccitation.volume","79"],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Fuhse, C."],["dc.contributor.author","Meschede, A."],["dc.contributor.author","Herweg, C."],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.contributor.author","Vitta, S."],["dc.date.accessioned","2018-11-07T10:45:43Z"],["dc.date.available","2018-11-07T10:45:43Z"],["dc.date.issued","2004"],["dc.description.abstract","Ceramic-metal (MgO combined with Fe, Ti and Ni80Nb20) and polymer-metal (polycarbonate combined with Ag and Pd) nanocomposite multilayers were deposited at room temperature by laser ablation (at 248 nm). The multilayers were characterized by X-ray reflectometry, infrared spectroscopy and transmission electron microscopy. In the case of MgO/metal multilayers, well-layered structures are produced down to layer periodicities of 1.2 nm, necessary for tunneling magnetoresistance devices and X-ray mirrors in the 'water window'. The interface roughness in the case of polymer/metal multilayers is found to be a strong function of the metal layer thickness and also the nature of the metal."],["dc.identifier.doi","10.1007/s00339-004-2725-8"],["dc.identifier.isi","000222766100120"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/47572"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Springer"],["dc.relation.issn","0947-8396"],["dc.title","Microstructure of pulsed laser deposited ceramic-metal and polymer-metal nanocomposite thin films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","863"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Applied Physics A"],["dc.bibliographiccitation.lastpage","867"],["dc.bibliographiccitation.volume","93"],["dc.contributor.author","Roeder, Johanna"],["dc.contributor.author","Faupel, Joerg"],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.date.accessioned","2018-11-07T11:08:19Z"],["dc.date.available","2018-11-07T11:08:19Z"],["dc.date.issued","2008"],["dc.description.abstract","Complex polymer-metal nanocomposites have a wide range of applications, e.g. as flexible displays and packaging materials. Pulsed laser deposition was applied to form nanostructured materials consisting of metal clusters (Ag, Au, Pd and Cu) embedded in a polymer (polycarbonate, PC) matrix. The size and amount of the metal clusters are controlled by the number of laser pulses hitting the respective targets. For Cu and Pd, smaller clusters and higher cluster densities are obtained as in the cases of Ag and Au due to a stronger reactivity with the polymers and thus a lower diffusivity. Implantation effects, differences in metal diffusivity and reactivity on the polymer surfaces, and the coalescence properties are discussed with respect to the observed microstructures on PC and compared to the metal growth on poly (methyl methacrylate), PMMA."],["dc.identifier.doi","10.1007/s00339-008-4740-7"],["dc.identifier.isi","000260218500008"],["dc.identifier.purl","https://resolver.sub.uni-goettingen.de/purl?goescholar/3509"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/52745"],["dc.notes.intern","Merged from goescholar"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.relation.issn","0947-8396"],["dc.relation.orgunit","Fakultät für Physik"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.rights.access","openAccess"],["dc.rights.uri","https://goedoc.uni-goettingen.de/licenses"],["dc.subject.ddc","530"],["dc.title","Growth of polymer-metal nanocomposites by pulsed laser deposition"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.subtype","original_ja"],["dc.type.version","published_version"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","523"],["dc.bibliographiccitation.journal","Journal of Alloys and Compounds"],["dc.bibliographiccitation.lastpage","528"],["dc.bibliographiccitation.volume","404"],["dc.contributor.author","Suleiman, Mohammed"],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Borchers, Christine"],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.contributor.author","Kirchheim, Reiner"],["dc.contributor.author","Pundt, Astrid"],["dc.date.accessioned","2018-11-07T10:53:36Z"],["dc.date.available","2018-11-07T10:53:36Z"],["dc.date.issued","2005"],["dc.description.abstract","The reduction in the length scale of materials to the nanometer range brings about fundamental changes that lead to novel and unusual phenomena, very different from their coarse-grained counterparts. These differences are not only due to the different physical properties of the small-size system but it is also affected by the type of the stabiliser used on these materials. In situ X-ray diffraction (XRD) investigations of the hydrogen absorption behaviour in different nanometer sized palladium samples were performed during loading and unloading. Pressure-lattice parameter isotherms were constructed for three different samples: surfactant stabilised clusters, and two types of polymer stabilised samples (clusters and closed clusters layers sample). The pressure-lattice parameter isotherms for the samples show a narrowed lattice parameter miscibility gap. The closed clusters layers sample shows the smallest lattice parameter expansion values. The effect of the samples morphology on the lattice expansion will be discussed. It will be shown that not only the sample sizes affect the expansion but also the cluster surrounding plays an important rule. (c) 2005 Elsevier B.V. All rights reserved."],["dc.identifier.doi","10.1016/j.jallcom.2005.01.118"],["dc.identifier.isi","000234100100122"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/49386"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Elsevier Science Sa"],["dc.publisher.place","Lausanne"],["dc.relation.conference","9th International Symposium on Metal-Hydrogen Systems, Fundamentals and Applications"],["dc.relation.eventend","2004"],["dc.relation.eventlocation","AGH Univ Sci & Technol, Fac Phys & Comp Sci, Cracow, POLAND"],["dc.relation.eventstart","2004"],["dc.relation.issn","0925-8388"],["dc.relation.orgunit","Institut für Materialphysik"],["dc.title","Hydrogen absorption behaviour in nanometer sized palladium samples stabilised in soft and hard matrix"],["dc.type","conference_paper"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","247"],["dc.bibliographiccitation.issue","4"],["dc.bibliographiccitation.journal","Nature Materials"],["dc.bibliographiccitation.lastpage","252"],["dc.bibliographiccitation.volume","2"],["dc.contributor.author","Moshnyaga, Vasily T."],["dc.contributor.author","Damaschke, Bernd"],["dc.contributor.author","Shapoval, O."],["dc.contributor.author","Belenchuk, A."],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Lebedev, Oleg I."],["dc.contributor.author","Verbeeck, J."],["dc.contributor.author","van Tendeloo, G."],["dc.contributor.author","Mucksch, M."],["dc.contributor.author","Tsurkan, V."],["dc.contributor.author","Tidecks, R."],["dc.contributor.author","Samwer, Konrad H."],["dc.date.accessioned","2018-11-07T10:39:50Z"],["dc.date.available","2018-11-07T10:39:50Z"],["dc.date.issued","2003"],["dc.description.abstract","'Colossal magnetoresistance' in perovskite manganites such as La0.7Ca0.3MnO3 (LCMO), is caused by the interplay of ferro-paramagnetic, metal-insulator and structural phase transitions. Moreover, different electronic phases can coexist on a very fine scale resulting in percolative electron transport. Here we report on (LCMO)(1-x):(MgO)(x) (0 < x less than or equal to 0.8) epitaxial nano-composite films in which the structure and magnetotransport properties of the manganite nanoclusters can be tuned by the tensile stress originating from the MgO second phase. With increasing x, the lattice of LCMO was found to expand, yielding a bulk tensile strain. The largest colossal magnetoresistance of 10(5)% was observed at the percolation threshold in the conductivity at x(c) approximate to 0.3, which is coupled to a structural phase transition from orthorhombic (0 < x less than or equal to 0.1) to rhombohedral R (3) over barc structure (0.33 less than or equal to x less than or equal to 0.8). An increase of the Curie temperature for the R (3) over barc phase was observed. These results may provide a general method for controlling the magnetotransport properties of manganite-based composite films by appropriate choice of the second phase."],["dc.identifier.doi","10.1038/nmat859"],["dc.identifier.isi","000182052700022"],["dc.identifier.pmid","12690398"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/46149"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Nature Publishing Group"],["dc.relation.issn","1476-4660"],["dc.relation.issn","1476-1122"],["dc.title","Structural phase transition at the percolation threshold in epitaxial (La0.7Ca0.3MnO3)(1-X):(MgO)(X) nanocomposite films"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]

[["dc.bibliographiccitation.firstpage","1171"],["dc.bibliographiccitation.issue","2"],["dc.bibliographiccitation.journal","Journal of Applied Physics"],["dc.bibliographiccitation.lastpage","1173"],["dc.bibliographiccitation.volume","92"],["dc.contributor.author","Faupel, J."],["dc.contributor.author","Krebs, Hans-Ulrich"],["dc.contributor.author","Kaufler, A."],["dc.contributor.author","Luo, Y."],["dc.contributor.author","Samwer, Konrad H."],["dc.contributor.author","Vitta, S."],["dc.date.accessioned","2018-11-07T10:18:52Z"],["dc.date.available","2018-11-07T10:18:52Z"],["dc.date.issued","2002"],["dc.description.abstract","Giant magnetoresistance (GMR) of 3.5% in low fields of about 10 Oe was observed at room temperature in as-prepared laser-deposited Ni80Fe20/Ag (permalloy/Ag) multilayers. Strong columnar growth in combination with preferential sputtering of Ag from the film surface during deposition of Ni80Fe20 layer helps to directly create a discontinuous multilayer structure necessary for high GMR values. The magnetoresistance was found to increase to 5.1% after annealing for just 10 min at 275 degreesC. This increase is attributed to structural relaxation processes such as demixing of the intermixed interfaces, preferential diffusion of Ag to the column boundaries and reduction of structural defects. Pulsed laser deposition appears to be a suitable technique for the preparation of permalloy/Ag films with considerable GMR in a one-step process. (C) 2002 American Institute of Physics."],["dc.identifier.doi","10.1063/1.1489088"],["dc.identifier.isi","000176600000081"],["dc.identifier.uri","https://resolver.sub.uni-goettingen.de/purl?gro-2/41540"],["dc.notes.status","zu prüfen"],["dc.notes.submitter","Najko"],["dc.publisher","Amer Inst Physics"],["dc.relation.issn","0021-8979"],["dc.title","Giant magnetoresistance in laser-deposited permalloy/Ag multilayers"],["dc.type","journal_article"],["dc.type.internalPublication","yes"],["dc.type.peerReviewed","yes"],["dc.type.status","published"],["dspace.entity.type","Publication"]]