We prepared a series of Mg1-x (AlLi)x B2 samples with 0≤x≤0.45 in order to compensate with Li the electron doping induced by Al. Structural characterization by means of neutron and x-ray diffraction confirms that Li enters the Mg B2 structure even though in an amount less than nominal one. We performed susceptibility, resistivity, and specific heat measurements. Vibrational properties were also investigated by means of Raman spectroscopy. We compare these results with those obtained on a homologous series of Mg1-x Alx B2 samples. The systematic success of scaling the relevant properties with the Al content rather than with the electron doping suggests that lattice deformation plays an important role in tuning the superconducting properties. © 2006 The American Physical Society.

Role of charge doping and lattice distortions in codoped Mg1-x (AlLi)x B2 compounds / Monni, M.; Ferdeghini, C.; Putti, M.; Manfrinetti, P.; Palenzona, A.; Affronte, M.; Postorino, P.; Lavagnini, M.; Sacchetti, A.; Di Castro, D.; Sacchetti, F.; Petrillo, C.; Orecchini, A.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 73:21(2006), pp. 1-11. [10.1103/PhysRevB.73.214508]

Role of charge doping and lattice distortions in codoped Mg1-x (AlLi)x B2 compounds

Affronte M.;
2006

Abstract

We prepared a series of Mg1-x (AlLi)x B2 samples with 0≤x≤0.45 in order to compensate with Li the electron doping induced by Al. Structural characterization by means of neutron and x-ray diffraction confirms that Li enters the Mg B2 structure even though in an amount less than nominal one. We performed susceptibility, resistivity, and specific heat measurements. Vibrational properties were also investigated by means of Raman spectroscopy. We compare these results with those obtained on a homologous series of Mg1-x Alx B2 samples. The systematic success of scaling the relevant properties with the Al content rather than with the electron doping suggests that lattice deformation plays an important role in tuning the superconducting properties. © 2006 The American Physical Society.
2006
73
21
1
11
Role of charge doping and lattice distortions in codoped Mg1-x (AlLi)x B2 compounds / Monni, M.; Ferdeghini, C.; Putti, M.; Manfrinetti, P.; Palenzona, A.; Affronte, M.; Postorino, P.; Lavagnini, M.; Sacchetti, A.; Di Castro, D.; Sacchetti, F.; Petrillo, C.; Orecchini, A.. - In: PHYSICAL REVIEW. B, CONDENSED MATTER AND MATERIALS PHYSICS. - ISSN 1098-0121. - 73:21(2006), pp. 1-11. [10.1103/PhysRevB.73.214508]
Monni, M.; Ferdeghini, C.; Putti, M.; Manfrinetti, P.; Palenzona, A.; Affronte, M.; Postorino, P.; Lavagnini, M.; Sacchetti, A.; Di Castro, D.; Sacchetti, F.; Petrillo, C.; Orecchini, A.
File in questo prodotto:
File Dimensione Formato  
Role of charge doping and lattice distortions in codoped Mg1−x„AlLi...xB2 PhysRevB.73.214508.pdf

Accesso riservato

Tipologia: Versione pubblicata dall'editore
Dimensione 263.7 kB
Formato Adobe PDF
263.7 kB Adobe PDF   Visualizza/Apri   Richiedi una copia
Pubblicazioni consigliate

Licenza Creative Commons
I metadati presenti in IRIS UNIMORE sono rilasciati con licenza Creative Commons CC0 1.0 Universal, mentre i file delle pubblicazioni sono rilasciati con licenza Attribuzione 4.0 Internazionale (CC BY 4.0), salvo diversa indicazione.
In caso di violazione di copyright, contattare Supporto Iris

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11380/1207360
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 28
  • ???jsp.display-item.citation.isi??? 27
social impact