Neutron diffraction from HoNi{sub 2}B{sub 2}C. Version 1

RENi{sub 2}B{sub 2}C (RE=Rare Earth) are quaternary compounds which exhibit a considerable degree of interaction between their superconducting and magnetic properties. The Ho variant is found to become superconducting at {Tc} = 9 K, but anomalous behaviour is observed in the low field magnetic properties at T<7 K (increasing susceptibility with decreasing temperature); at temperatures less than 5.6 K more conventional behaviour is regained. Neutron diffraction measurements demonstrate that at low temperatures (T<5K) the magnetic order consists of ferromagnetic planes antiferromagnetically coupled up the c-axis with a Ho moment of 8.9 {plus_minus}0 0.2 {mu}{sub B} canted at 15{degree}{plus_minus}5 from the a-b plane. At high temperatures (7