Y Mita et al 2002 J. Phys.: Condens. Matter 14 11173 doi:10.1088/0953-8984/14/44/447
Y Mita1, Y Ishida1, M Kobayashi1,2 and S Endo2,3
Show affiliationsThe pressure dependence of first-order magnetic Raman peak of NiO single crystal was studied up to 20 GPa at room temperature. At ambient pressure, an unknown peak is also observed at nearly the same position as the one-magnon one and their separation becomes remarkable with increasing pressure. Pressure coefficients of the one-magnon peak and the other peak are obtained as 0.4 and 1.5 cm−1 GPa−1, respectively. The next-nearest-neighbour antiferromagnetic exchange constant J2 is obtained as a function of the lattice constant.
78.30.Hv Other nonmetallic inorganics
Issue 44 (11 November 2002)
Received 25 June 2002
Published 25 October 2002
Y Mita et al 2002 J. Phys.: Condens. Matter 14 11173
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