We report the temperature- and magnetic-field-dependent resistivity of MgB2sintered at high temperature and high pressure condition. The superconductingtransition width for the resistivity measurement was about 0.4 K, and thelow-field magnetization showed a sharp superconducting transition with atransition width of about 1 K. The resistivity in the normal state roughlyfollowed T^2 behavior with smaller residual resistivity ratio (RRR) of 3 overbroad temperature region above 100 K rather than reported T^3 behavior withlarger RRR value of ~ 20 in the samples made at lower pressures. Also, theresistivity did not change appreciably with the applied magnetic field, whichwas different from previous report. These differences were discussed with themicroscopic and structural change due to the high-pressure sintering.
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