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Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7

Shin-Ichi Ikeda·Naoki Shirakawa·Takashi Yanagisawa·Yoshiyuki Yoshida·Shigeru Koikegami·Soh Koike·Masashi Kosaka·Yoshiya Uwatoko
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Abstract

We report a uniaxial pressure-dependence of magnetism in layered perovskite strontium ruthenate Sr3Ru2O7. By applying a relatively small uniaxial pressure, greater than 0.1 GPa normal to the RuO2 layer, ferromagnetic ordering manifests below 80 K from the enhanced-paramagnet. Magnetization at 1 kOe and 2 K becomes 100 times larger than that under ambient condition. Uniaxial pressure dependence of Curie temperature T_C suggests the first order magnetic transition. Origin of this uniaxial-pressure induced ferromagnetism is discussed in terms of the rotation of RuO6 octahedra within the RuO2 plane.

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Shin-Ichi Ikeda, Naoki Shirakawa, Takashi Yanagisawa, Yoshiyuki Yoshida, Shigeru Koikegami, Soh Koike, Masashi Kosaka, Yoshiya Uwatoko. 2004-03-02. Uniaxial-Pressure induced Ferromagnetism of Enhanced Paramagnetic Sr3Ru2O7. https://doi.org/10.1143/jpsj.73.1322

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