Specific heat of thin-film amorphous molybdenum-based alloys

Autor:	T. H. Geballe, D. Mael, Shozo Yoshizumi, W.L. Carter
Rok vydání:	1985
Předmět:	Materials science Analytical chemistry Titanium alloy chemistry.chemical_element Sputter deposition Amorphous solid Coherence length Condensed Matter::Materials Science symbols.namesake chemistry Molybdenum Electrical resistivity and conductivity symbols Thin film Debye model
Zdroj:	Physical Review B. 32:1476-1479
ISSN:	0163-1829
Popis:	We have studied the effects of transition-metal (TM) and metalloid (M) substitution in amorphous molybdenum-based TM-M alloys. Absolute-specific-heat measurements of thin-film (approx. 1 ..mu..m thick) samples of Mo-Ge, Mo-Si, and Mo-Ti-Si alloys prepared by magnetron sputtering were made using the relaxation-time-constant method. A comparison of the superconducting transition width made both thermally and electrically indicates that the sample homogeneity is better than 0.1% for length scales greater than the coherence length. Both the electronic density of states and T/sub c/ with increasing metalloid concentration and (Ti)/(Mo) ratio, in agreement with a rigid-band model. We compare our results to current theories relating the electron-phonon coupling constant lambda/sub e/-ph to the electronic density of states.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::96ccf420212d2a325cff0b0c7493b61f https://doi.org/10.1103/physrevb.32.1476 Zobrazit plný text záznamu