Pressure dependence of spin fluctuations in metallic glasses Zrâ â Niâ â ,Zrâ â (Nix/Feâ â â -x)â â and /Zrx/feâ â â -x
dc.contributor.author | Hamed, Fathalla A. | en_US |
dc.date.accessioned | 2009-07-09T18:42:23Z | |
dc.date.available | 2009-07-09T18:42:23Z | |
dc.date.issued | 1991-07-09T18:42:23Z | |
dc.identifier.uri | http://hdl.handle.net/10464/2015 | |
dc.description.abstract | The superconducting transition temperature Tc of metallic glasses ZrxFelOO-x (x=80, 75), Zr75(NixFelOO-x)25 (x=75, 50, 25), and CU2SZr75 were measured under quasi-hydrostatic pressure up to 8 OPa (80kbar). The volume (pressure) dependence of the electron-phonon coupling parameters Aep for CU25Zr75 was calculated using the McMillan equatio11. Using this volume dependence of Aep and the modified McMillan equation which incorporates spin-fluctuations, the volume dependence of the spin fluctuation parameter, Asf, was determined in Zr75Ni25, ZrxFelOO-x , a11d Zr75(NixFelOO-x)25. It was found that with increasing pressure, spinfluctuations are suppressed at a faster rate in ZrxFe lOO-x and Zr75(NixFelOO-x)25, as Fe concentration is increased. The rate of suppression of spin-fluctuations with pressure was also found to be higher in Fe-Zr glasses than in Ni-Zr glasses of similar composition. | en_US |
dc.language.iso | eng | en_US |
dc.publisher | Brock University | en_US |
dc.subject | Metallic glasses. | en_US |
dc.subject | Fluctuations (Physics) | en_US |
dc.subject | Pressure--Measurement. | en_US |
dc.subject | Spin (Aerodynamics) | en_US |
dc.title | Pressure dependence of spin fluctuations in metallic glasses Zrâ â Niâ â ,Zrâ â (Nix/Feâ â â -x)â â and /Zrx/feâ â â -x | en_US |
dc.type | Electronic Thesis or Dissertation | en |
dc.degree.name | M.Sc. Physics | en_US |
dc.degree.level | Masters | en_US |
dc.contributor.department | Department of Physics | en_US |
dc.degree.discipline | Faculty of Mathematics and Science | en_US |
refterms.dateFOA | 2021-08-07T02:02:03Z |