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 SM ISO690:2012GURATINDER, K., TSURKAN, Vladimir, PRODAN, Lilian, KELLER, Lukas, EMBS, Jan Peter, JURANYI, Fanni, MEDARDE, Marisa Luisa, RUEGG, Ch, ZAHARKO, Oksana. Magnetic order and exchange couplings in the frustrated diamond lattice antiferromagnet MnSc2Se4. In: Physical Review B, 2022, vol. 105, p. 0. ISSN 2469-9950. DOI: https://doi.org/10.1103/PhysRevB.105.174423 |
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  Physical Review B |
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| Volumul 105 / 2022 / ISSN 2469-9950 /ISSNe 2469-9969 | ||||||
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| DOI:https://doi.org/10.1103/PhysRevB.105.174423 | ||||||
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We report the magnetic properties of the A-site spinel compound MnSc2Se4. The macroscopic magnetic measurements uncover successive magnetic transitions at TN1=2.04 K, followed by two further transitions at TN2=1.8 K and TN3=1.6 K. Neutron powder diffraction reveals that both TN2<T<TN1 and T<TN3 orders are associated with the propagation vector k=(3/4,3/4,0), while the magnetic structures are collinear amplitude modulated and helical, respectively. Using neutron powder spectroscopy we demonstrated the effect of substitution of S by Se on the magnetic exchange. The energy range of the spin-wave excitations is suppressed due to the chemical pressure of the X ion in MnSc2X4 (X=S, Se) spinels. |
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| Cuvinte-cheie Amplitude-modulated, Antiferromagnets, Diamond lattices, Effect of substitution, Magnetic exchange, Magnetic orders, Magnetic transitions, Neutron powders, Propagation vector, Spinel compounds |
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