Ferromagnetic order in Yb(Rh_0.73Co_0.27)₂Si₂

2012/10/04 by Stefan Lausberg, S. Lausberg, Lausberg, S. +22
Materials Science · Physics and Astronomy · #FOS: Physical sciences #Magnetic Properties of Alloys #Magnetic properties of thin films #Rare-earth and actinide compounds #Strongly Correlated Electrons (cond-mat.str-el) #cond-mat.str-el

paper · pdf · doi:10.48550/arxiv.1210.1345

5 pages, 4 figures

openalex publication_date 2012/10/04 · arxiv created 2013/06/10 · arxiv updated 2013/06/11 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28

Abstract

We present the discovery of ferromagnetism in single crystalline Yb(Rh_0.73Co_0.27)₂Si₂ below T_C = 1.30 K with a spontaneous magnetic moment of 0.1 μ_B/Yb along the crystallographic c-axis. This is shown by the huge c-susceptibility peak, the hysteresis in magnetization as well as by the field-dependent susceptibility and specific heat data. This discovery motivates the reinvestigation of the magnetic order in Yb(Rh_1-xCo_x)₂Si₂ with x < 0.27 and in pure YbRh₂Si₂ under small pressures with field along the c-direction to look for low-lying ferromagnetic order.

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