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在带锌矩磁锰镁铁氧体中加入小ＣａＯ，可使静态磁学性能变得更好，不但矩形比（Ｂｒ／Ｂｍ）得到了提高（从０．８８到０．９３），而且矫顽力（Ｈｃ）还进一步降低（从０．６５奥斯特到０．４３奥斯特），因此可使它更好地满足矩磁材料的需要。
The addition of small CaO to the ferromagnetic Mn-Mn ferrites with Zinc magnets results in better static magnetic properties, not only the squareness ratio (Br / Bm) is increased (from 0.88 to 0.93) The Hc is further reduced (from 0.65 Oersted to 0.43 Oersteds), thus making it better able to meet the needs of Momentum material.