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Tm169 Mössbauer-spectroscopy study of the magnetic superconductor TmNi2B2C

A. M. Mulders, P. C. M. Gubbens, K. H. J. Buschow

DOI 10.1103/PhysRevB.54.14963 · Physical Review B

T1

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Abstract

The magnetic properties of TmNi2B2C were measured with Tm169 Mössbauer spectroscopy at temperatures from 0.3 to 700 K. A clear transition in the quadrupole splitting (QS) near 1 K is observed, which might be due to magnetic ordering or to quadrupole ordering. Although a possible small magnetic Tm moment of ∼0.1(1)μB is found below ∼1 K, the change in QS is larger than expected due to magnetic ordering only. Therefore the nature of the transition is unclear at this moment. From the temperature dependence of QS is deduced that the crystal-field ground-state level most likely equals the singlet a|−4〉+b|0〉+a|+4〉.

Source-reported materials — not catalogue approval

FormulaReported Tc (K)Pressure (GPa)Type
TmNi2B2C

Archive — visibility unverified

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10.3Pressure not reportedonset
TmNi2B2C

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Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula.

10.8Pressure not reportedunknown

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