Magnetic-Field-Induced Valence Transition
in EuNi₂(Si_1xGe_x)₂ in Fields up to 500 T

V. V. Platonov*, O. M. Tatsenko*, V. D. Selemir*, and M. Shiga**

* All-Russia Scientific-Research Institute of Experimental Physics, Sarov, Nizhegorodsk oblast, 607188 Russia

** Kyoto University, Sakyo-ku, Kyoto 606-01, Japan

e-mail: Platonov@ntc.vniief.ru

Received June 1, 2001

Abstract—The critical fields of the valence transition induced by a magnetic field in the EuNi₂(Si_1–xGe_x)₂ (x=
0.5–0.75) compound in an intermediate valence state are measured. The magnetic-field-induced valence tran-
sition is observed in the low-concentration range down to x = 0.5. It is demonstrated that the critical field
increases linearly with a decrease in the germanium concentration. © 2002 MAIK “Nauka/Interperiodica”.

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