Magnetic phase transition in CoO confined to a vycor type porous glass.   Neutron diffraction study
  Neutron diffraction studies of antiferromagnetic CoO confined to a vycor type porous glass demonstrate a continuous magnetic phase transition with a decreased N\'eel temperature and reduced magnetic moment as compared with the bulk. 
I. V. Golosovsky, I. Mirebeau, G. Andr\'e, D. A. Kurdyukov and Y. A.   Kumzerov, M. Tovar, D. M. T\"obbens