title: Incommensurate strain-induced ordering of interstitial oxygen in Nb.
abstract: We present a semi-phenomenological theory of the strain-induced interaction between interstitial oxygen dissolved in Nb and predict an incommensurate oxygen ordering wave which is mediated by the intrinsic bcc instability at k = 2/3(111). We discuss the stability range of this ordering phenomenon, which may play a role in the performance of Nb radio frequency (RF) cavities for high energy particle accelerators.
authors.affiliation: Max-Planck-Institut für Metallforschung, Heisenbergstraße 3, D-70569 Stuttgart, Germany.
authors.forename: R P
authors.initials: RP
authors.lastname: Kurta
authors.forename: V N
authors.initials: VN
authors.lastname: Bugaev
authors.forename: A
authors.initials: A
authors.lastname: Stierle
authors.forename: H
authors.initials: H
authors.lastname: Dosch