  A high pressure neutron diffraction study of the oxypnictide NdMnAsO0.95F0.05
has been performed at temperatures of 290 K - 383 K and pressures up to 8.59
GPa. The results demonstrate that the antiferromagnetic order of the Mn spins
is robust to pressures of up to 8.59 GPa. TN is enhanced from 360 K to 383 K
upon applying an external pressure of 4.97 GPa, a rate of 4.63 K/GPa.
NdMnAsO0.95F0.05 is shown to violate Bloch's rule which would suggest that
NdMnAsO0.95F0.05 is on the verge of a localised to itinerant transition. There
is no evidence of a structural transition but applied pressure tends to result
in more regular As-Mn-As and Nd-O-Nd tetrahedra. The unit cell is significantly
more compressible along the c-axis than the a-axis, as the inter-layer coupling
is weaker than the intrinsic bonds contained within NdO and MnAs slabs.
