Crystal Growth and Physical Properties of Sr4Co3O7.5+xCl2 Single Crystals (x ∼ 
0.14)

Ryu, Gihun; Hu, Zhiwei; Chang, Chun-Fu; Kuo, Chang-Yang; Shin, K.; Lin, Hong-Ji; Chen, Chien-Te; Tjeng, Liu Hao; Komarek, Alexander C.

doi:10.3390/cryst9120623

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Crystal Growth and Physical Properties of Sr₄Co₃O_7.5+xCl₂ Single Crystals (x ∼ 0.14)

MPS-Authors

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Ryu, Gihun
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126666

Hu, Zhiwei
Zhiwei Hu, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126565

Chang, Chun-Fu
Chun-Fu Chang, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126717

Kuo, Chang-Yang
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons243244

Shin, K.
Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126881

Tjeng, Liu Hao
Liu Hao Tjeng, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

/persons/resource/persons126701

Komarek, Alexander C.
Alexander Komarek, Physics of Correlated Matter, Max Planck Institute for Chemical Physics of Solids, Max Planck Society;

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引用

Ryu, G., Hu, Z., Chang, C.-F., Kuo, C.-Y., Shin, K., Lin, H.-J., Chen, C.-T., Tjeng, L. H., & Komarek, A. C. (2019). Crystal Growth and Physical Properties of Sr₄Co₃O_7.5+xCl₂ Single Crystals (x ∼ 0.14). Crystals, 9(12):, pp. 1-9. doi:10.3390/cryst9120623.

引用: https://hdl.handle.net/21.11116/0000-0005-505E-8

要旨

We report on the single crystal growth and physical properties of the triple-layer cobalt oxychloride Sr 4 Co 3 O 7 . 5 + x Cl 2 (xsim; 0.14) with 4-3-10 Ruddlesdenndash;Popper type structure that was synthesized by a KCl-SrCl 2 flux method. The crystal structure was determined by means of single crystal X-ray diffraction. In this quasi two dimensional (2D) material two pyramidal CoO 5 layers and a central Co oxide layer with random oxygen deficiencies are forming the layered Co oxide blocks. These blocks are separated by Cl minus; -ions which are interacting via Van der Waals forces, thus, enhancing the quasi 2D nature of this compound. The soft X-ray absorption spectra at the Co-L 2 , 3 edge and O-K edge indicate that Co ions are in high spin +3 state which is in agreement with the single crystal X-ray diffraction measurements that indicate basically pyramidal oxygen environments for the Co 3 + ions in this compound.