Zobrazeno 1 - 10
of 90
pro vyhledávání: '"Dirk Holland-Moritz"'
Autor:
Nicolai Grund, Dirk Holland-Moritz, Saba Khademorezaian, Lucas P. Kreuzer, Nico Neuber, Lucas M. Ruschel, Hendrik Voigt, Johanna Wilden, Fan Yang, Soham Banerjee, Malte Blankenburg, Ann-Christin Dippel, Jan Peter Embs, Sergiy Divinski, Ralf Busch, Andreas Meyer, Gerhard Wilde
Publikováno v:
APL Materials, Vol 12, Iss 5, Pp 051126-051126-7 (2024)
We investigated the change in the structure and dynamics of a Ni–Nb bulk metallic glass upon sulfur addition on both microscopic and macroscopic scales. With the sulfur concentration of 3 at. %, where the composition Ni58Nb39S3 exhibits the best gl
Externí odkaz:
https://doaj.org/article/0e1bb8ed2f9e4f5da3aa3560db6ccb6c
Autor:
Chi Zhang, Yun Feng, Huashan Liu, Sandro Szabó, Dirk Holland-Moritz, Zach Evenson, Fan Yang, Hailong Peng
Publikováno v:
Journal of Non-Crystalline Solids. 613:122348
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ea60eec4abd6a8ffb3b38169675302ee
https://doi.org/10.1016/j.jnoncrysol.2023.122348
https://doi.org/10.1016/j.jnoncrysol.2023.122348
Autor:
Andreas Meyer, Fan Yang, C.C. Yuan, Baolong Shen, C.L Shi, Weihua Wang, Xun-Li Wang, X.K Xi, Dirk Holland-Moritz, Maozhi Li, F Hu
Publikováno v:
Materials Today. 32:26-34
The formation mechanism of glass at the atomic scale has been under debate over centuries. In this work, we demonstrate that hybridization, as manifested by Mott’s pseudogap, has a strong influence on the bond length as well as atomic packing, whic
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::7213477d4d12e15e7ece989d557e70ca
https://doi.org/10.1016/j.mattod.2019.06.001
https://doi.org/10.1016/j.mattod.2019.06.001
Autor:
Jozef Bednarcik, Florian Kargl, Thomas C. Hansen, Dirk Holland-Moritz, H Weis, Fan Yang, Tobias Unruh, Andreas Meyer
Publikováno v:
Physical Review B. 104
We studied structure and dynamics in liquid Ge and ${\text{Si}}_{20}{\text{Ge}}_{80}$. Quasielastic neutron scattering (QNS) was employed to accurately determine the Ge self-diffusion coefficient. Static structure factors were measured using neutron
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::28bea8c77f3f229995886e7180a398e4
https://doi.org/10.1103/physrevb.104.134108
https://doi.org/10.1103/physrevb.104.134108
Publikováno v:
Pure and Applied Chemistry. 91:895-910
In this work results of studies on the short-range order and on the atomic dynamics in different stable and undercooled glass-forming metallic melts are reviewed. In order to undercool the melts deeply below the melting temperature and to avoid chemi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b180369f1a31dce74b5b9e8862f863c1
https://doi.org/10.1515/pac-2018-0907
https://doi.org/10.1515/pac-2018-0907
Autor:
Benedikt Bochtler, Wiebke Lohstroh, Dirk Holland-Moritz, Fan Yang, Sandro Szabo, Johanna Wilden, Ralf Busch, Andreas Meyer
Substitution of Nickel by Sulfur leads to bulk metallic glass formation in eutectic Ti75Ni25. In order to understand the improved glass forming ability, a detailed analysis of the melt dynamics was performed. We measured the density, the viscosity, a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2619f8d78821b7781a7700cabfac2f1a
https://doi.org/10.1063/5.0012409
https://doi.org/10.1063/5.0012409
Autor:
Tobias Kordel, Fan Yang, H. L. Peng, Dirk Holland-Moritz, Th. Voigtmann, Thomas C. Hansen, S. T. Liu
We develop an embedded-atom method (EAM) model to perform classical molecular-dynamics computer simulations of a model of Zr-Ni-Al ternary melts, based on the existing binary ones. The EAM potential is validated against a broad range of experimental
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::68b325fcf92845f9a8ac795a947a9ce5
https://doi.org/10.1103/physrevb.100.104202
https://doi.org/10.1103/physrevb.100.104202
We study the effect of the substitution of Zr by Hf on the dynamical behavior in the Zr36Ni64 melt. A reduced measured self-diffusion coefficient and a higher measured melt viscosity for an increased amount of Hf were observed. The ternary Hf10Zr25Ni
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::d907eb649ba4751ff1b9eeae517246d0
https://doi.org/10.1103/physrevb.97.094202
https://doi.org/10.1103/physrevb.97.094202
Autor:
Dirk Holland-Moritz, Fan Yang, Tobias Kordel, Thomas C. Hansen, Andreas Meyer, Thomas Voigtmann, Benedikt Nowak
Publikováno v:
Physical Review Materials. 1
We investigate the dynamical decoupling of the diffusion coefficients of the different components in a metallic alloy melt, using a combination of neutron diffraction, isotopic substitution, and electrostatic levitation in Zr-Ni melts. We show that e
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b908e46abc21475748493a8dd8910e7d
https://doi.org/10.1103/physrevmaterials.1.025603
https://doi.org/10.1103/physrevmaterials.1.025603
Publikováno v:
Experimental Methods in the Physical Sciences
Experimental Methods in the Physical Sciences, pp.583-636, 2017, ⟨10.1016/b978-0-12-805324-9.00010-8⟩
Experimental Methods in the Physical Sciences, pp.583-636, 2017, ⟨10.1016/b978-0-12-805324-9.00010-8⟩
Neutron scattering techniques are important tools for studying the structure and dynamics of high-temperature melts. However, studies are often restricted by high-temperature limits of standard furnaces and possible contamination of the sample by the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::38ca9b0a7b550ae9f12fdc8c44f3a319
https://hal.science/hal-02534124
https://hal.science/hal-02534124