In this work we report the growth and characterization of single crystals of the intermetallic compound YbCd1-xSb2. This compound was synthesized with different Cd concentrations, using the Sb self-flux technique. Magnetic susceptibility as a function of temperature and applied field, electrical resistivity, specific heat and x-ray powder diffraction measurements were performed to characterize the physical properties of our single crystals. The results suggest an AFM phase with Tn ~ 3 K and heavy-fermion behavior. In order to understand the role of the CEF effects in the properties of this system, we have also performed preliminary studies of CEF effects. Finally, we discuss the magnetism and other physical properties of the YbCdSb2 compound based in the Cd stoichiometry dependency and CEF effects.
The intermetallic compound Eu 3 Ir 4 Sn 13 presents a peculiar structural distortion at T*~57K and an antiferromagnetic transition at T N~1 1K. [1] Previous studies have shown that, under hydrostatic pressure T* increases and T N barely changes. [2] This structural transition is present in many Sn-based 3-4-13 compounds, some of which present superconducting states that are favored under pressure. In this work, we will show how Ga-substitution affects both transitions and compare with the results under hydrostatic pressure. Furthermore, we will study if the change in the carrier density due to the chemical substitution affects the electronic properties of the compound.
The International Conference on Strongly Correlated Electrons systems (SCES) is one of the most traditional conferences in Condensed Matter Physics worldwide. SCES continues to bring together, in every edition, outstanding scientists working in the frontiers of the complex and advanced phenomena of this area. The SCES 2020 Edition was planned to be an in-person event in Guaruja, SP, Brazil in September of 2020 as a continuation of the successful series of the SCES conferences: Sendai (’92), San Diego (’93), Amsterdam (’94), Goa (’95), Zurich (’96), Paris (’98), Nagano (’99), Ann Arbor (’01), Krakow (’02), Karlsruhe (’04), Vienna (’05), Houston (’07), Buzios (’08), Santa Fe (’10), Cambridge (’11), Tokyo (’13), Grenoble (’14), Hangzhou (’16), Prague (’17) and Okayama (’19). Additionally, every three years since 1997, SCES has been joining the International Conference on Magnetism (ICM) held in: Cairns (’97), Recife (’00), Rome (’03), Kyoto (’06), Karlsruhe (’09), Busan (’12), Barcelona (’15), and San Francisco (’18). List of The international advisory committee, The prize committee, The publication Committee, The organizing committee, The local committee are available in this pdf.
Detailed experimental studies of oxygen capture in the argon purification process using activated-copper on alumina and layered double hydroxide (LDH) were carried out, and the results were compared to the BASF commercial copper material Cu-0226 S performance. Here, we report the following main findings: i) the desired crystal structures for the studied materials were obtained after the synthesis process, ii) the use of the LDH structure promoted greater dispersion of the CuO phase when compared to BASF commercial catalyst, iii) alumina impregnated with copper demonstrated a similar result as the BASF sample for O2 capture, and iv) among the three samples evaluated, the LHD sample demonstrated the best results regarding oxygen capturing performance becoming a promising structure for further studies.
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