title: Impact of plastic deformation and shear band formation on the boson heat capacity peak of a bulk metallic glass.
abstract: The effect of annealing on the low-temperature heat capacity of a bulk Pd38.5Ni40P21.5 metallic glass is investigated for as-quenched and deformed (rolled) states. Although the boson heat capacity peak increases with increasing strain, it relaxes faster and to a lower level compared to that of the as-quenched state after annealing treatments both below and above the glass transition temperature Tg. The glass is found to retain a certain "memory" on the room-temperature plastic deformation even after annealing above Tg. Indications for two counteracting processes that might be related to different types of shear bands are observed.
authors.affiliation: Institute of Materials Physics, University of Münster, 10 Wilhelm-Klemm Strasse, Münster 48149, Germany and Department of Solid State Physics, State Technical University, 14 Moscow Avenue, Voronezh 394026, Russia.
authors.forename: Yu P
authors.initials: YP
authors.lastname: Mitrofanov
authors.affiliation: Institute of Materials Physics, University of Münster, 10 Wilhelm-Klemm Strasse, Münster 48149, Germany.
authors.forename: M
authors.initials: M
authors.lastname: Peterlechner
authors.affiliation: Institute of Materials Physics, University of Münster, 10 Wilhelm-Klemm Strasse, Münster 48149, Germany.
authors.forename: S V
authors.initials: SV
authors.lastname: Divinski
authors.affiliation: Institute of Materials Physics, University of Münster, 10 Wilhelm-Klemm Strasse, Münster 48149, Germany and Institute of Nanochemistry and Nanobiology, School of Environmental and Chemical Engineering, Shanghai University, Shanghai 200444, People's Republic of China.
authors.forename: G
authors.initials: G
authors.lastname: Wilde