Superconducting and magnetic phase transitions in RExY1-xRh1.1Sn3.6 (RE=Er, Ho)


Pasch, A.W.M. van de and Lázaro, F.J. and Blank, D.H.A. and Houwman, E.P. and Flokstra, J. (1987) Superconducting and magnetic phase transitions in RExY1-xRh1.1Sn3.6 (RE=Er, Ho). Japanese journal of applied physics, 26 (Suppl. 26-3). pp. 1293-1294. ISSN 0021-4922

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Abstract:The superconducting (Tc and magnetic ordering (Tm) critical temperatures in RExY1-xRh1.1Sn3.6 (RE = Er, Ho) have been determined by magnetic measurements. For RE = Er superconductivity appears for any value of x, and reentry to a magnetically ordered state for x ≥ 0.6, while for RE = Ho the compound becomes either superconducting or magnetically ordered, and is expected to remain paramagnetic for x near 0.5. Theories of Abrikosov-Gorkov and Roshen-Ruvalds are used to explain Tc(x) , leading to I2N(0)G=0.23 K and 0.8 K for Er and Ho respectively. Comparison of Tm(x) with the theory of Oguchi-Obokata gives respectively J = 0.30 K and 0.96, using a Heisenberg model with z = 6.
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Copyright:© 1987 The Japan Society of Applied Physics
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