Recent developments in Earth-abundant copper-sulfide thermoelectric materials

AV Powell - Journal of Applied Physics, 2019 - pubs.aip.org
The ability of thermoelectric devices to convert waste heat into useful electrical power has
stimulated a remarkable growth in research into thermoelectric materials. There is, however …

Synthesis and characterization of nanoscale composite particles formed by 2D layers of Cu–Fe sulfide and Mg-based hydroxide

YL Mikhlin, RV Borisov, SA Vorobyev… - Journal of Materials …, 2022 - pubs.rsc.org
We introduce here a multifunctional material composed of alternating atomic sulfide sheets
close to the composition of CuFeS2 and Mg-based hydroxide ones (valleriite), which are …

Colloidal synthetic environmental design towards high-density twin boundaries and boosted thermoelectric performance in Cu5FeS4 icosahedrons

Y Wei, Z Zhou, H Wang, S Zheng, G Han, G Wang… - Nano Energy, 2024 - Elsevier
High-density twin boundaries can significantly influence materials' functional and
mechanical properties. In thermoelectrics, twin engineering is able to manipulate the carrier …

Valleriite, a natural two-dimensional composite: x-ray absorption, photoelectron, and mossbauer spectroscopy, and magnetic characterization

YL Mikhlin, MN Likhatski, OA Bayukov, Y Knyazev… - ACS …, 2021 - ACS Publications
Valleriite is of interest as a mineral source of basic and precious metals and as an unusual
material composed of two-dimensional (2D) Fe–Cu sulfide and magnesium hydroxide …

Interplay between Fe(II) and Fe(III) and Its Impact on Thermoelectric Properties of Iron-Substituted Colusites Cu26−xFexV2Sn6S32

AO Polevik, AV Sobolev, IS Glazkova, IA Presniakov… - Compounds, 2023 - mdpi.com
Following the trend of finding better thermoelectric materials among synthetic analogs of
copper–chalcogenide minerals, we have synthesized iron-bearing colusites of a general …

Synthesis and stability of single-phase chalcopyrite–a potential reference material for key investigations in chemistry and metallurgical engineering

N Frenzel, M Mehne, S Bette, S Kureti, G Frisch - RSC advances, 2021 - pubs.rsc.org
Single-phase chalcopyrite (CuFeS2) is a key reference material in the development of new
metallurgical processes to ensure a reliable copper supply. Here, we report on the …

Atomic distribution, electron transfer, and charge compensation in artificial iron-bearing colusites Cu26-xFexTa2-γSn6S32

AO Polevik, AS Efimova, AV Sobolev… - Journal of Alloys and …, 2024 - Elsevier
The crystal and electronic structures of synthetic Cu 26− x Fe x Ta 2 Sn 6 S 32 (0≤ x≤ 4.0)
colusites were studied by single-crystal X-ray diffraction, 57 Fe and 119 Sn Mössbauer …

The puzzling structure of Cu5FeS4 (bornite) at low temperature

A Martinelli, GO Lepore, F Bernardini… - … Section B: Structural …, 2018 - journals.iucr.org
The crystal structure of Cu5FeS4 (bornite) has been investigated using synchrotron X-ray
powder diffraction at temperatures between 10 and 275 K. Diffraction data confirm that …

Investigation of LPBF A800H steel parts using Computed Tomography and Mössbauer spectroscopy

RR Gainov, D Faidel, W Behr, G Natour, F Pauly… - Additive …, 2020 - Elsevier
Laser powder bed fusion (LPBF) was applied in this study to produce a prototype of a
miniaturized catalytic burner (CAB), which is a key component of high-temperature polymer …

[PDF][PDF] Zero-field nuclear magnetic resonance of copper minerals

T Ly - 2021 - unsworks.unsw.edu.au
Industrial magnetic resonance spectrometers are used for on-line, bulk, quantitative analysis
of minerals. These analysers are used to rapidly detect the grade of ore which can assist ore …