Amorphous thin film growth: Theory compared with experiment (2009)
M. Raible, S. G. Mayr, S. J. Linz, M. Moske, P. Hänggi, K. Samwer
PACS. 68.35.Bs – Surface structure and topography. PACS. 61.43.Dq – Amorphous semiconductors, metals and alloys. Abstract. – Experimental results on amorphous ZrAlCu thin-film growth and the...
Interface controlled electronic variations in correlated heterostructures (2009)
Gehrke, K., Moshnyaga, V., Lebedev, O. I., Kirilenko, D., Van Tendeloo, G., Samwer, K.
An interface modification of LCMO-BTO superlattices was found to massively influence magnetic and magnetotransport properties. Moreover it determines the crystal structure of the manganite layers,...
Molecular Dynamics Simulation on Plastic Deformation of Metallic Nanowires (2007)
H. Ikeda, Y. Qi, T. Cagin, K. Samwer, W. Johnson, W. Goddard Iii, ...
We have studied the initial stage of plastic deformation behavior of metallic nanowire of pure nickel, by using molecular dynamics methods. In these simulations, we applied uniform strain along...
Enhanced diffusivity in supercooled liquids (2007)
Abstract. The enhancement of self and probe diffusivity over the StokesEinstein values by orders of magnitude is observed in the viscous regime of polymers, molecular glass-formers and supercooled...
Validity of temperature and time equivalence in metallic glasses during shear deformation (2006)
Zink, Mareike, Samwer, K., Johnson, W. L., Mayr, S. G.
Competing internal and external time scales, which are determined by temperature and experimental sampling time—viz., reciprocal frequency—respectively, are essentials for understanding the...
Direct imaging of lattice strain-induced stripe phases in an optimally-doped manganite (2006)
Sudheendra, L., Moshnyaga, V., Damaschke, B., Samwer, K.
In a manganite film without quenched disorder, we show texturing in the form of insulating and metallic stripes above and below Curie temperature (Tc), respectively, by high resolution scanning...
Zink, Mareike, Samwer, K., Johnson, W. L., Mayr, S. G.
Plastic deformation in metallic glasses well below their glass transition temperatures Tg occurs spatially heterogeneously within highly localized regions, termed shear transformation zones (STZs)....
Rösner, P., Hachenberg, J., Samwer, K., Wehn, R., Lunkenheimer, P., Loidl, A., ...
Abstract. Dynamic loss spectra for laser-deposited poly(methyl methacrylate) (PMMA) films are investigated at a frequency of 5.4 kHz with dielectric spectroscopy and mechanical torsional spectroscopy...
A-site Ordering versus Electronic Inhomogeneity in CMR-Manganite Films (2005)
Moshnyaga, V., Sudheendra, L., Lebedev, O. I., Gehrke, K., Shapoval, O., Belenchuk, A., ...
Epitaxial La3/4Ca1/4MnO3/MgO(100) (LCMO) thin films show unusual rhombohedral (R-3c) structure with a new perovskite superstructure due to unique ordering of La and Ca at the A-site positions. Very...
Room temperature (TR) elastic constants and compressive yield strengths of ~30 metallic glasses reveal an average shear limit gammaC=0.0267±0.0020, where tauY=gammaCG is the maximum resolved shear...
Spin-lattice relaxation phenomena in manganite La0.7Sr0.3MnO3 thin films (2005)
Weber, M. C., Hillebrands, B., Moshnyaga, V., Samwer, K.
Time-resolved magneto-optics was used to study spin-lattice relaxation dynamics in thin epitaxial La0.7Sr0.3MnO3 films. Two distinct recovery regimes of the ferromagnetic order can be resolved upon...
Becker, T., Streng, C., Luo, Y., Moshnyaga, V., Damaschke, B., Shannon, Nic, ...
Thin films of La0.7Sr0.3MnO3 on MgO show a metal insulator transition and colossal magnetoresistance. The shape of this transition can be explained by intrinsic spatial inhomogeneities, which give...
Bal, K., Kirilyuk, A., Rasing, T., Luo, Y., Samwer, K., Haast, M.A.M., ...
Bal, K., Kirilyuk, A., Rasing, T., Luo, Y., Samwer, K., Haast, M.A.M., ...
The crystallographic contribution of the nonlinear magneto-optical response from CoNi/Pt interfaces appears to scale linearly with increasing interface roughness as determined by small angle x-ray...
Amorphous thin film growth: Theory (2000)
M. Raible, S. G. Mayr, S. J. Linz, M. Moske, K. Samwer
compared with experiment
Amorphous thin film growth: theory compared with experiment (1999)
Raible, M., Mayr, S. G., Linz, S. J., Moske, M., Hänggi, P., Samwer, K.
Experimental results on amorphous ZrAlCu thin film growth and the dynamics of the surface morphology as predicted from a minimal nonlinear stochastic deposition equation are analysed and compared....
Dependence of Magnetic Anisotropy and Magnetoresistance of Ni81Fe19-Films on Annealing (1999)
Lorenz, T., Kaeufler, A., Luo, Y., Moske, M., Samwer, K.
Permalloy (Py:Ni81Fe19) exhibits an anisotropic magnetoresistance (AMR) which is very often used to read magnetic signals from storage devices. Py-films of thickness 20nm were prepared by...
Samwer, K., Busch, R., Johnson, W. L.
The change of the compressibility at the glass transition Tg is evaluated from pressure experiments in the liquid and the glassy state of the ZrTiCuNiBe bulk metallic glass forming system. Via the...
Strain Rate Induced Amorphization in Metallic Nanowires (1999)
H. Ikeda, Y. Qi, T. Cagin, K. Samwer, W. L. Johnson, W. A. Goddard, ...
Using molecular dynamics simulations with a many-body force field, we studied the deformation of metal alloy nanowires subjected to various strain rates. For all strain rates, the Ni nanowire is...
Schröter, K., Wilde, G., Willnecker, R., Weiss, M., Samwer, K., Donth, E.
The dynamic shear modulus and compliance of the dynamic glass transition were investigated in two metallic glasses (Pd40Ni40P20 and Zr65Al7.5Cu17.5 Ni10). Isothermal measurements over four frequency...
Structure of glassy early-transition-metal-late-transition-metal hydrides (1983)
Hydrogen is used as a probe for obtaining structural information on metallic glasses. Results from experimental radial distribution functions of hydrided and unhydrided Zr3Rh and Zr2Pd glasses show a...
Yeh, X. L., Samwer, K., Johnson, W. L.
Noncrystalline metallic hydrides can be formed from certain crystalline Zr3Rh intermetallic phases by hydrogenation. X-ray diffraction patterns, density measurements, and superconducting properties...
CRYSTAL-FIELD EFFECTS AND MAGNETIC INTERACTIONS IN AMORPHOUS Ce89Al11 (1980)
Felsch, W., Kushnir, S., Samwer, K.
No abstract available
LOW TEMPERATURE THERMAL PROPERTIES OF AMORPHOUS SUPERCONDUCTING ZrCu (1980)
Löhneysen, H.V., Platte, M., Sander, W., Schink, H., Minnigerode, G.V., Samwer, K.
No abstract available
CRYSTAL-FIELD EFFECTS AND MAGNETIC INTERACTIONS IN AMORPHOUS Ce89Al11 (1980)
Felsch, W., Kushnir, S., Samwer, K.
No abstract available
LOW TEMPERATURE THERMAL PROPERTIES OF AMORPHOUS SUPERCONDUCTING ZrCu (1980)
Löhneysen, H.V., Platte, M., Sander, W., Schink, H., Minnigerode, G.V., Samwer, K.
No abstract available
CRYSTAL-FIELD EFFECTS AND MAGNETIC INTERACTIONS IN AMORPHOUS Ce89Al11 (1980)
Felsch, W., Kushnir, S., Samwer, K.
No abstract available