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Naji, M. |
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Motta, Antonella |
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Aletan, Dirar |
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Mohamed, Tarek |
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Ertürk, Emre |
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Taccardi, Nicola |
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Kononenko, Denys |
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Petrov, R. H. | Madrid |
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Alshaaer, Mazen | Brussels |
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Bih, L. |
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Casati, R. |
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Muller, Hermance |
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Kočí, Jan | Prague |
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Šuljagić, Marija |
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Kalteremidou, Kalliopi-Artemi | Brussels |
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Azam, Siraj |
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Ospanova, Alyiya |
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Blanpain, Bart |
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Ali, M. A. |
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Popa, V. |
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Rančić, M. |
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Ollier, Nadège |
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Azevedo, Nuno Monteiro |
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Landes, Michael |
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Rignanese, Gian-Marco |
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Avdeev, M.
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (23/23 displayed)
- 2024The magnetic structure and spin-reorientation of ErGacitations
- 2021Cotton Textile/Iron Oxide Nanozyme Composites with Peroxidase-like Activity: Preparation, Characterization, and Applicationcitations
- 2021Extreme Biomimetics: Designing of the First Nanostructured 3D Spongin–Atacamite Composite and its Applicationcitations
- 2020Revealing the structure of composite nanodiamond–graphene oxide aqueous dispersions by small-angle scatteringcitations
- 2016Structures and crystal chemistry of the double perovskites Ba2LnB′O6 (Ln=lanthanide B′=Nb5+ and Ta5+): Part I. Investigation of Ba2LnTaO6 using synchrotron X-ray and neutron powder diffractioncitations
- 2014Structure and Interaction of Poly(ethylene glycol) in Aqueous Solutions. Small-Angle Neutron Scattering Datacitations
- 2014Magnetic ordering in TmGacitations
- 2014Determination of martensite structures of the Au7Cu5Al4 and Au7Cu5.7Al3.3 shape-memory alloyscitations
- 2009Structures, phase transitions and microwave dielectric properties of the 6H perovskites Ba3BSb2O9, B=Mg, Ca, Sr, Bacitations
- 2007In-Situ High Energy X-Ray Diffraction Study and Quantitative Phase Analysis in the Alpha + Gamma Phase Field of Titanium Alumindescitations
- 2004Structure-property relations in xBaTiO3-(1-x)La(Mg1/2Ti1/2)O3 solid solutionscitations
- 2004Broad-band dielectric spectroscopy of SrTiO3: Bi ceramicscitations
- 2003Structure and microwave dielectric properties of La(Mg0.5Ti0.5)O3-CaTiO3 systemcitations
- 2003Relaxor behavior of BaBi2Ta2O9 and BaBi2Nb2O9 ceramicscitations
- 2002Processing and characterization of Ba-based layered ferroelectric relaxors
- 2002Synthesis by sol-gel and characterization of strontium titanate powder
- 2001Relaxor properties of Ba-based layered perovskitescitations
- 2001Dielectric relaxation in Ba-based layered perovskitescitations
- 2001Seeding effect on micro- and domain structure of sol-gel-derived PZT thin filmscitations
- 2001Ba-based layered ferroelectric relaxorscitations
- 2001PZT-based piezoelectric composites via a modified sol-gel routecitations
- 2000Low-temperature Na4Ti5O12 from X-ray and neutron powder diffraction data
- 2000Structure investigation of intelligent aerogelscitations
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article
Determination of martensite structures of the Au7Cu5Al4 and Au7Cu5.7Al3.3 shape-memory alloys
Abstract
The β-phase of Au7Cu5Al4 undergoes a reversible shape-memory phase transformation for which several conflicting martensite phases have been reported. Here we show the significance of the cooling temperature used to obtain the martensite. If Au7Cu5Al4 is cooled from the parent phase condition to cryogenic temperatures, e.g. below 200 K, the martensitic phase is orthorhombic (space group Pcmn, a = 4.4841 Å, b = 5.8996 Å, c = 17.8130 Å); however, when this composition is cooled to only ~260 K it will in general consist of a mixture of orthorhombic and monoclinic phase (the latter has space group P21/m, a = 4.4742 Å, b = 5.9265 Å, c = 13.3370 Å, β = 91.425°). In contrast, a sample with decreased Al content (Au7Cu5.7Al3.3) transforms fully to monoclinic phase if cooled to ~260 K.