Výsledky vyhledávání - "Kancko, Andrej"

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Spin-glass ground states in the frustrated pyrochlore and fluorite antiferromagnets NaCd$M_2$F$_7$ ($M$ = Ni$^{2+}$, Mn$^{2+}$)

Autor: Kancko, Andrej, Corrêa, Cinthia Antunes, Colman, Ross Harvey

We report the crystal structures, magnetic and thermodynamic properties of two magnetically frustrated $A$'$A$"$M_2$F$_7$-type antiferromagnets, NaCdNi$_2$F$_7$ and NaCdMn$_2$F$_7$. While NaCdNi$_2$F$_7$ forms a stable pyrochlore structure (SG: $Fd \

Externí odkaz: http://arxiv.org/abs/2411.11579

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Robustness of the pyrochlore structure in rare-earth A2Ir2O7 iridates and pressure-induced structural transformation in IrO2

Autor: Staško, Daniel, Vlášková, Kristina, Kancko, Andrej, Többens, Daniel M., Daisenberger, Dominik, Garbarino, Gaston, Colman, Ross Harvey, Klicpera, Milan

A comprehensive study of the structural properties of the heavily investigated rare-earth A2Ir2O7 series under extreme conditions is presented. The series is covered by studying iridates with A = Pr, Sm, Dy-Lu. Temperature- and pressure-dependent syn

Externí odkaz: http://arxiv.org/abs/2403.00477

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Structural and spin-glass properties of single crystal $J_{eff}$ = 1/2 pyrochlore antiferromagnet NaCdCo$_2$F$_7$ : correlating $T_f$ with magnetic-bond-disorder

Autor: Kancko, Andrej, Giester, Gerald, Colman, Ross H.

Weak bond disorder disrupts the expected spin-liquid ground-state of the ideal $S$ = 1/2 Heisenberg pyrochlore antiferromagnet. Here we introduce a single crystal study of the structural and magnetic properties of the bond-disordered pyrochlore NaCdC

Externí odkaz: http://arxiv.org/abs/2302.06919

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The search for new spin-liquid materials - synthesis of kagome and pyrochlore fluoride magnetics

Autor: Kancko, Andrej

This thesis focuses on the synthesis and characterization of a new AA′ B2F7-type pyrochlore fluoride family, NaCdB2F7 (B = Mn, Fe, Co, Ni, Cu, Zn) predicted by a cal- culated pyrochlore structural tolerance factor, as well as the synthesis of new k

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2186::2f08bac17072db376f265a969f9f6d5a
http://www.nusl.cz/ntk/nusl-506208

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Magnetic shape memory alloys: Effects of doping with Cu and Fe

Autor: Kancko, Andrej

In this thesis, the focus is set on studying the properties of Ni-Mn-Ga magnetic shape memory (MSM) alloys, ferromagnetic Heusler compounds, codoped with Fe and Cu. Codoping Ni-Mn-Ga MSM alloys with Fe and Cu had previously been studied due to a syne

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=od______2186::a389f0b9458522eedd67078225d2f571
http://www.nusl.cz/ntk/nusl-434061

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