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Soliton-Mediated Magnetic Phase Transition in the Frustrated Antiferromagnet CsCoCl3

  • H. Kikuchi
  • Y. Ajiro
Conference paper
Part of the Springer Series in Synergetics book series (SSSYN, volume 43)

Abstract

Hexagonal CsCoCl3 is a quasi-one-dimensional (1D) S=1/2 Ising antiferromagnet with intrachain interaction J=-75K. With decreasing temperature, a 3D magnetic transition occurs due to the weak antiferromagnetic interchain interaction as usual. However, a frustration effect due to triangular arrangement of the constituent magnetic chains in the c-plane gives rise to unusual successive phase transitions at TN1=21K and TN2=9K. The spin frustration model identifies the intermediate-temperature phase between TN1 and TN2 as a partially disordered (PD) phase in which 2/3 of magnetic chains order antiferromagnetically with each other, leaving the rest uncorrelated, and the low-temperature phase below TN2 as a ferrimagnetic (FR) phase in which all magnetic chains order in a collinear ferrimagnetic arrangement. While the model has succeeded in explaining the various experimental results, there remain several basic questions; Whether the PD phase is stable or not? How can 1/3 of chains behave paramagnetically? What happens at TN2? We have carried out magnetic resonance experiments (NMR, ESR) in order to solve these problems from a microscopic point of view.

Keywords

Internal Field Resonance Field Interchain Interaction Frustration Effect Magnetic Chain 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin, Heidelberg 1989

Authors and Affiliations

  • H. Kikuchi
    • 1
  • Y. Ajiro
    • 1
  1. 1.Faculty of ScienceKyoto UniversityKyotoJapan

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