Probing the ground state magnetic structure of magnetic multiferroic Fe4Nb2O9

Fe4Nb2O9 is a magnetic multiferroic member in the family of honeycomb antiferromagnet A4B2O9. The polycrystalline sample shows another transition around 77 K apart from the...Fe₄Nb₂O₉是蜂窝状反铁磁体（honeycomb antiferromagnet）A₄B₂O₉家族中的磁多铁性成员。该多晶样品除……之外，在约77 K处还存在另一相变。