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Stabilization of Short- and Long-Range Magnetic Ordering through the Cooperative Effect of 1D [CuO4] Chains and [CuO2X2] Quadrilateral in Quasi-1D Spin-1/2 Systems.
Guo, Ruixin; Si, Rutong; Li, Zhaoyi; Lin, Weijie; Wen, Bo; Gebauer, Ralph; Guo, Shu.
Afiliação
  • Guo R; Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
  • Si R; International Quantum Academy, Shenzhen, 518048, China.
  • Li Z; The Abdus Salam International Centre for Theoretical Physics (ICTP), Strada Costiera 11, 34151, Trieste, Italy.
  • Lin W; Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
  • Wen B; International Quantum Academy, Shenzhen, 518048, China.
  • Gebauer R; School of Physics and Electronics, Henan University, Kaifeng, 475004, China.
  • Guo S; Shenzhen Institute for Quantum Science and Engineering, Southern University of Science and Technology, Shenzhen, 518055, China.
Angew Chem Int Ed Engl ; 63(40): e202410428, 2024 Oct 01.
Article em En | MEDLINE | ID: mdl-38980962
ABSTRACT
Quasi-1D chain antiferromagnets with reduced structural dimensionality are a rich playground for investigating novel quantum phenomena. We report the synthesis, crystal structure, and magnetism of two novel quasi-1D antiferromagnets, ß-PbCu2(TeO3)2Cl2 (I) and PbCu2(TeO3)2Br2 (II). Their magnetic frameworks are constructed via Cu-based quasi-1D [Cu(2)O4]∞ zigzag chains with square-planar [Cu(1)O2X2] (X=Cl or Br) separated among 1D chains. Specific heat measurements show λ peaks at ~9 K and ~19 K for I and II, respectively. Moreover, both broad maximums (χmax=90 K for I and 80 K for II) and small kinks (TN≈9 K for I and 19 K for II) have been observed in magnetic susceptibility measurements of I and II. Bonner-Fisher model fitting, and theoretical analyses were performed to evaluate the magnetic exchange interactions. Our experimental and theoretical results and structure-properties relationship analysis reveal the coexistence of short- and long-range magnetic ordering from the cooperative effect of 1D [CuO4]∞ chains and [CuO2X2] quadrilateral.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Alemanha

Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Idioma: En Revista: Angew Chem Int Ed Engl Ano de publicação: 2024 Tipo de documento: Article País de afiliação: China País de publicação: Alemanha