Publications related to XAS study of the high pressure behaviour of quartz-like compounds

One-dimensional composite host-guest structure in BaVS3

László Forró, Gervais Chapuis, Alla Arakcheeva, Helmuth Berger, Philip Pattison, Neven Barisic

A detailed synchrotron X-ray diffraction (XRD) study performed with a single crystal of BaVS3 (barium vanadium trisulfide) in the temperature range between 10 and 295 K is reported. Aside from the known tetragonal–orthorhombic (240 K) and orthorhombic–mono ...

2021

Optimization of composition and structure of cemented carbide cutting tools

Samy Adjam

WC-Co cemented carbides are composites, which combine a hard phase consisting of WC grains and a metallic ductile phase as a binder. Their excellent mechanical properties, combining high hardness, toughness and refractory properties, make them excellent ma ...

EPFL2021

A universal signature in the melting of metallic nanoparticles

Kevin Rossi

Predicting when phase changes occur in nanoparticles is fundamental for designing the next generation of devices suitable for catalysis, biomedicine, optics, chemical sensing and electronic circuits. The estimate of the temperature at which metallic nanopa ...

ROYAL SOC CHEMISTRY2021

Structural properties of organometalic halide perovskite and their application in photodetectors

Anastasiia Glushkova

Hybrid organometallic halide perovskites have been intensively investigated in the past years as highly efficient light harvesters for various optoelectronic applications for both sensing and emitting light. However, many open questions remain regarding th ...

EPFL2020

Melting of a skyrmion lattice to a skyrmion liquid via a hexatic phase

Henrik Moodysson Rønnow, Arnaud Magrez, Marco Cantoni, Fabrizio Carbone, Ping Huang, Thomas Schönenberger

While in 3D materials melting is a single, first-order phase transition, in 2D systems, it can also proceed via an intermediate phase. For a skyrmion lattice in Cu2OSeO3, magnetic field variations can tune this quasiparticle 2D solid into a skyrmion liquid ...

NATURE PUBLISHING GROUP2020

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

Lin Yang

In this thesis I study the synthesis and basic physical properties characterization on 3

d

, 4

d

and 5

d

transition metal compounds. Great success has been obtained in 3

d

transition metal compounds, in which the electric states are well localized due t ...

EPFL2017

BiTeCl and BiTeBr: A comparative high-pressure optical study

Arnaud Magrez, Oleg Yazyev, Helmuth Berger, Philippe Bugnon, Ana Akrap, Gabriel Albert Autes

We here report a detailed high-pressure infrared transmission study of BiTeCl and BiTeBr. We follow the evolution of two band transitions: the optical excitation beta between two Rashba-split conduction bands, and the absorption. across the band gap. In th ...

Amer Physical Soc2017

Alloy development of a new platinum-based bulk metallic glass

Hamed Kazemi

The aim of the present thesis is the development of a new Pt-based bulk metallic glass based on the ternary system of Pt-B-Si that i) complies with the hallmarking standard Pt 850 (i.e. with at least 85 wt.-pct of Pt); ii) provides high hardness (HV>600) a ...

EPFL2017

Development of a new family of phosphorous-free Pt-based bulk metallic glasses

Ludger Weber, Maïté Blank, Hamed Kazemi, Cyrill Werner Cattin

New BMGs exhibiting strong glass forming ability combined with high hardness have been developed based on the Pt-Si-B ternary system. The effects of partial substitution of platinum by transition metals of the group iron, cobalt, nickel, and copper, as wel ...

Elsevier2017

Probing ice VII crystallization from amorphous NaCl-D2O solutions at gigapascal pressures

Livia Eleonora Bove Kado

We probe the possible inclusion of salt (NaCl) in the ice VII lattice over the pressure range from 2 to 4 gigapascal. We combine data from neutron diffraction experiments under pressure and from computational structure searches based on density functional ...

Royal Soc Chemistry2017

XAS study of the high pressure behaviour of quartz-like compounds

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One-dimensional composite host-guest structure in BaVS3

Optimization of composition and structure of cemented carbide cutting tools

A universal signature in the melting of metallic nanoparticles

Structural properties of organometalic halide perovskite and their application in photodetectors

Melting of a skyrmion lattice to a skyrmion liquid via a hexatic phase

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

BiTeCl and BiTeBr: A comparative high-pressure optical study

Alloy development of a new platinum-based bulk metallic glass

Development of a new family of phosphorous-free Pt-based bulk metallic glasses

Probing ice VII crystallization from amorphous NaCl-D2O solutions at gigapascal pressures

Optimization of composition and structure of cemented carbide cutting tools

Structural properties of organometalic halide perovskite and their application in photodetectors

Alloy development of a new platinum-based bulk metallic glass

BiTeCl and BiTeBr: A comparative high-pressure optical study

One-dimensional composite host-guest structure in BaVS3

Melting of a skyrmion lattice to a skyrmion liquid via a hexatic phase

Probing ice VII crystallization from amorphous NaCl-D2O solutions at gigapascal pressures

Synthesis and Physical Properties of 3d, 4d and 5d Transition Metal Compounds

A universal signature in the melting of metallic nanoparticles

Development of a new family of phosphorous-free Pt-based bulk metallic glasses