A structurally perfect S = 1/2 Kagomé antiferromagnet

摘要: The syntheses and magnetic susceptibilities of a pure series rare copper minerals from the atacamite family with general formula ZnxCu4-x(OH)6Cl2 (0 ≤ x 1) are reported. structure these compounds features corner-sharing triangular kagome lattice antiferromagnetically coupled Cu(II) ions. We correlate onset ordering mole fraction paramagnetic ions located between layers demonstrate that fully Zn-substituted compound shows no down to 2 K, resulting in highly spin-frustrated S = 1/2 lattice.