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Sereni, J.G.; Roberts, J.; Gastaldo, F.; Gómez Berisso, M.; Giovannini, M. |
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Title |
Shastry-Sutherland phase formation in magnetically frustrated Ce2Pd2In1-xSnx alloys |
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Journal Article |
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Year |
2019 |
Publication |
Materials Today: Proceedings |
Abbreviated Journal |
XXIII Latin American Symposium on Solid State Physics (SLAFES XXIII), San Carlos de Bariloche, Argen |
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14 |
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80-83 |
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Keywords |
Magnetic frustration; Shastry Sutherland phases; Ce-compounds |
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Abstract |
Taking profit that the ternary indides Ce2+εPd2-εIn form two branches of solid solutions allowing to access to ferromagnetic (FM, ε > 0) or anti-ferromagnetic (AFM, ε < 0) ground states depending on the relative Ce/Pd concentration 'ε' , we have tested the possibility of a Shastry-Sutherland phase formation by electron doping the trivalent In lattice with tetravalent Sn. Starting from the AFM, ε < 0 side provides the lowest electron concentration conditions increasing the sensitivity to electron doping. For such a purpose low temperature thermal and magnetic properties were investigated on Ce2+εPd2-εIn1-xSnx alloys within the 0 ≤ x ≤ 0.6 range of concentration. |
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2214-7853 |
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BT @ pedrazp @ |
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824 |
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Author |
Sereni, J.G.; Roberts, J.; Gastaldo, F.; Giovannini, M. |
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Title |
Suppression of the Shastry-Sutherland phase driven by electronic concentration reduction in magnetically frustrated Ce2.15Pd1.95(Sn1-yIny)0.9 alloys |
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Journal Article |
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Year |
2019 |
Publication |
Physical Review B |
Abbreviated Journal |
Phys. Rev. B |
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100 |
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5 |
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054421 |
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Exploiting the possibility to switch from antiferromagnetic (AFM) and ferromagnetic (FM) ground states (GSs) in out-stoichiometric branches of
Ce2Pd2In alloys, the stability of Shastry-Sutherland (ShSu) phase of
Ce2Pd2Sn as a function of Sn/In electron doping was studied. Magnetic and specific-heat measurements show that the Ce-rich compositions stabilize the FM-GS throughout the Sn/In-FM substitution, allowing to extend the formation of the ShSu phase up to its collapse in a tricritical point around ycr=0.5. On the other hand, this behavior is quite different from that reported in a recent investigation on the AFM branch where atomic disorder at intermediate Sn/In-AFM concentrations inhibits the formation of the ShSu phase. |
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American Physical Society |
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BT @ pedrazp @ 10.1103/PhysRevB.100.054421 |
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828 |
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