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Oral presentation

Magnetic phase diagrams of Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ below 2 K with CuO$$_{2}$$ ribbon chains

Fujimura, Akio*; Yasui, Yukio*; Igawa, Naoki; Yoshida, Yukihiko*; Ishigaki, Toru*; Kono, Yohei*; Kittaka, Shunichiro*; Sakakibara, Toshiro*

no journal, , 

Magnetic phase diagram was investigated by the specific heat measurement and magnetic structure has been studied by using neutron diffraction for Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ with CuO$$_{2}$$ ribbon chains. We found that this material showed antiferromagnetic transition at T$$_{N}$$ = 1.85 K under 0 magnetic field. The difference in magnetic and crystal structure between Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ and Rb$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ are discussed.

Oral presentation

Magnetic behavior and magnetic structure of CuO$$_{2}$$ ribbon system A$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ (A=Rb, Cs)

Fujimura, Akio*; Yasui, Yukio*; Kono, Yohei*; Kittaka, Shunichiro*; Sakakibara, Toshiro*; Igawa, Naoki; Matsukawa, Takeshi*; Yoshida, Yukihiko*; Hoshikawa, Akinori*; Ishigaki, Toru*

no journal, , 

The magnetic behavior and magnetic structure of A$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ (A=Rb, Cs) with CuO$$_{2}$$ ribbon chains have been studied by using specific heat measurement and neutron diffraction method. Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ showed collinear-antiferromagnetic structure analyzed by the neutron diffraction. The relation between magnetic behavior and magnetic for those materials are discussed.

Oral presentation

Magnetic structure of one-dimensional frustrated quantum spin system Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$

Yasui, Yukio*; Fujimura, Akio*; Omori, Kiyoshi*; Igawa, Naoki; Matsukawa, Takeshi*; Yoshida, Yukihiko*; Hoshikawa, Akinori*; Ishigaki, Toru*

no journal, , 

The magnetic structure of Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ with CuO$$_{2}$$ ribbon chains have been studied by using the neutron powder diffraction. The magnetic reflections were observed below $$T_mathrm{N}$$ = 1.85 K and all of the magnetic reflections overlapped Bragg reflections. Considering that these are 16-Cu$$^{2+}$$ ions in the unit cell, Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ has the collinear-antiferromagnetic structure.

Oral presentation

Magnetic structure of 1D quantum spin system Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ with $$J_1$$ - $$J_2$$ model

Yasui, Yukio*; Fujimura, Akio*; Omori, Kiyoshi*; Igawa, Naoki; Matsukawa, Takeshi*; Yoshida, Yukihiko*; Hoshikawa, Akinori*; Ishigaki, Toru*

no journal, , 

The magnetic structure of Cs$$_{2}$$Cu$$_{2}$$Mo$$_{3}$$O$$_{12}$$ has been studied by using the neutron powder diffraction. Cu$$^{2+}$$ spins collinearly ordinate along the ${it b}$ axis and we found that this material has ferromagnetic structure in ribbon chains and antiferromagnetic structure between ribbon chains. Those results indicate that the magnetic structure is strongly inflected with ferromagnetic $$J_1$$. In this presentation, the detail of magnetic structure of this material will be discussed.

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