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Uniaxial-pressure control of magnetic phase transitions in a frustrated magnet CuFe$$_{1-x}$$Ga$$_{x}$$O$$_{2}$$ (x =0, 0.018)

フラストレートした磁性体CuFe$$_{1-x}$$Ga$$_{x}$$O$$_{2}$$(x =0, 0.018)における一軸圧力による磁気相転移の制御

中島 多朗*; 満田 節生*; 高橋 慶一郎*; 吉冨 啓祐*; 増田 一也*; 金子 周史*; 本間 勇紀*; 小林 悟*; 北澤 英明*; 小坂 昌史*; 阿曽 尚文*; 上床 美也*; 寺田 典樹*; 脇本 秀一; 武田 全康; 加倉井 和久

Nakajima, Taro*; Mitsuda, Setsuo*; Takahashi, Keiichiro*; Yoshitomi, Keisuke*; Masuda, Kazuya*; Kaneko, Chikafumi*; Homma, Yuki*; Kobayashi, Satoru*; Kitazawa, Hideaki*; Kosaka, Masashi*; Aso, Naofumi*; Uwatoko, Yoshiya*; Terada, Noriki*; Wakimoto, Shuichi; Takeda, Masayasu; Kakurai, Kazuhisa

We have investigated effects of applied uniaxial pressure ($$p$$) on magnetic phase transitions in a triangular lattice antiferromagnet CuFeO$$_{2}$$ (CFO) and a slightly Ga-substituted compound CuFe$$_{1-x}$$Ga$$_{x}$$O$$_{2}$$ (CFGO) with $$x$$ = 0.018. We have performed neutron diffraction, spherical neutron polarimetry, magnetic susceptibility and pyroelectric measurements under $$p$$ up to 100 MPa applied on the [1$$bar1$$0] surfaces of the single crystal samples.

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