  We studied the temperature dependence of resistivity in a single crystalline
Nd2Fe14B using a newly developed high temperature probe. This novel probe uses
mechanical pin connectors instead of conducting glue/paste. From warming and
cooling curves, the Curie temperature was consistently measured around Tc = 580
K. In addition, anomalous discrete jumps were found only in cooling curves
between 400 and 500 K, but not shown in warming curves. More interestingly,
when the jumps occurred during cooling, the resistivity was increased. This
phenomenon can be understood in terms of temperature dependent striction effect
induced by the re-orientation of magnetic domains well below the Curie
temperature.
