We present the hydrothermal synthesis, as well as structural and chemical analysis of single crystals on the compounds EuCu3(OH)6Cl3, ZnxCu4−x(OH)6(NO3)2 and haydeeite, MgCu3(OH)6Cl2 all arising from the atacamite family. Magnetic and specific-heat measurements down to 1.8 K are carried out for these systems. EuCu3(OH)6Cl3 has a frustrated antiferromagnetic Cu 2+ ground state with order at 15 K, a strong anisotropy and increased magnetization from Van Vleck paramagnetic Eu 3+ contributions. ZnCu3(OH)6(NO3)2 reveals antiferromagnetic order at 9 K and measurements on haydeeite single crystals confirm the ferromagnetic order at 4.2 K with the easy axis within the kagome plane. These results prove that the atacamite family presents a broad class of materials with interesting magnetic ground states.
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