Magnetic ordering has been investigated by neutron scattering on an YBa2Cu3O6+x single crystal with x=0.1 and x=0.18, and an Al doped YBa2(CU2.86Al0.14)O-6.25 crystal. For the undoped crystal an antiferromagnetic ordering transition (AFI) was observed at T-N=410 K and 368 K (respectively for x=0.1 and x=0.18), but no second antiferromagnetic transition was found down to 2 K. In contrast, an antiferromagnetic reordering (AFII) was observed for the aluminum doped sample below T-2=8 K. This shows the high sensitivity of this second phase to impurities and indicates that this reordering is not necessarily an intrinsic property of YBa2Cu3O6+x.
|Journal||Physica C: Superconductivity and its Applications|
|Publication status||Published - 1994|
|Event||4th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors - Grenoble, France|
Duration: 5 Jul 1994 → 9 Jul 1994
|Conference||4th International Conference on Materials and Mechanisms of Superconductivity and High Temperature Superconductors|
|Period||05/07/1994 → 09/07/1994|