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In NQR Studies of CeRhIn 5 and CeCoIn 5 under High Pressure. -(KOHORI*, Y.; TAIRA, H.; FUKAZAWA, H.; KOHARA, T.; IWAMOTO, Y.; MATSUMOTO, T.; MAPLE, M. B.; J. Alloys Compd. 408-412 (2006) 51-53; Dep. Phys., Fac. Sci., Chiba Univ., Inage, Chiba 263, Japan; Eng.) -Schramke 16-017

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63 Cu Nuclear Quadrupole Resonance (NQR) measurements in Cu2O have been performed under high pressures (P ) up to 10 GPa at 1.6 K. The pressure cell, based on a technique using modified Bridgman anvils with a liquid pressure medium in Teflon capsule, generates nearly hydrostatic pressure with a volume of 1×10 −3 ml, which is sufficiently large for the detection of NMR/NQR signals. The narrow 63 Cu NQR was observed at 26.82 MHz (P = 0), and the resonance frequency varies linearly with P up to 9 GPa. This result shows that Cu NQR line in Cu2O becomes a convenient and precise P manometer.