51)MnO_3 was measured by using a cavity perturbation technique,and the ferromagnetic antiresonance(FMAR) phenomenon near T_ C (Curie temperature) or T_ N (Néel temperature),i.
51)MnO_3的微波吸收(PMA),观察到在居里温度TC或奈尔温度TN附近发生PMA呈现极小值即铁磁反共振(FMAR)现象。
