Search results

Sort By:

Limit search:

Stiffness of Auxetic Foams

100%

Więcek T., Wasilewski A.

Acta Physica Polonica A

2017

vol. 132

issue 1

182-184

An optical method is used for measurements of mechanical properties of foams. The method is based on analysis of diffraction pattern and does not require calibration. The measurements of the stiffness were performed for the conventional and auxetic foams. It was found that the stiffness of auxetic foams is several times greater than that of conventional foams.

Structural and elastic properties of barium chalcogenides (BaX, X=O, Se, Te) under high pressure

61%

Bhardwaj P., Singh S., Gaur N.

Open Physics

2008

vol. 6

issue 2

223-229

In the present paper we have investigated the high-pressure, structural phase transition of Barium chalcogenides (BaO, BaSe and BaTe) using a three-body interaction potential (MTBIP) approach, modified by incorporating covalency effects. Phase transition pressures are associated with a sudden collapse in volume. The phase transition pressures and associated volume collapses obtained from TBIP show a reasonably good agreement with experimental data. Here, the transition pressure, NaCl-CsCl structure increases with decreasing cation-to-anion radii ratio. In addition, the elastic constants and their combinations with pressure are also reported. It is found that TBP incorporating a covalency effect may predict the phase transition pressure, the elastic constants and the pressure derivatives of other chalcogenides as well.

Refine search results

1 Acta Physica Polonica A

1 Open Physics

1 2017

1 2008

1 Bhardwaj P.

1 Gaur N.

1 Singh S.

1 Wasilewski A.

1 Więcek T.

Search results

Stiffness of Auxetic Foams

Structural and elastic properties of barium chalcogenides (BaX, X=O, Se, Te) under high pressure