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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)

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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