公开(公告)号：US5856899A

公开(公告)日：1999-01-05

申请号：US955907

申请日：1997-10-23

申请人： Kinya Aoyagi ,  Tokuo Nakamura ,  Hiroshi Yamagami ,  Seiichi Abiko ,  Masahiro Iizuka ,  Satoshi Maki

发明人： Kinya Aoyagi ,  Tokuo Nakamura ,  Hiroshi Yamagami ,  Seiichi Abiko ,  Masahiro Iizuka ,  Satoshi Maki

IPC分类号： G11B5/10 ,  G11B5/105 ,  G11B5/133 ,  G11B5/193 ,  G11B5/23 ,  H01F1/34 ,  G11B5/235

CPC分类号： G11B5/193 ,  G11B5/1335 ,  G11B5/102 ,  G11B5/105 ,  G11B5/23 ,  G11B5/232

摘要： The magnetocrystalline anisotropic energy Kl is set to not more than 100 J/m.sup.3 and the absolute value of the magnetostriction in the direction, as the magnetic circuit direction, is reduced by appropriately selecting the ferrite material composition. Since the magnetocrystalline anisotropic energy Kl is small, the magnetoelastic energy largely affects the anisotropy of the crystallographic axis. The magnetoelastic energy is made negative and small in magnitude by adjusting the average coefficients of thermal expansion of the ferrite material and glass so as to apply a tensile stress around the magnetic gap of the magnetic head. The direction, i.e., magnetic circuit direction, is thereby allowed to coincide with a hard axis of magnetization. As a result, the permeability of the magnetic head is improved at high-frequency bands.

摘要翻译： 将磁晶各向异性能K1设定为不超过100J / m 3，并且通过适当选择铁素体材料组成，减小作为磁路方向的<100>方向的磁致伸缩的绝对值。 由于磁晶各向异性能K1小，所以磁弹性能很大程度上影响结晶轴的各向异性。 通过调整铁氧体材料和玻璃的平均热膨胀系数，使磁致伸缩能量呈负值且小的程度，从而在磁头的磁隙周围施加拉伸应力。 因此，允许<100>方向，即磁路方向与硬磁化轴一致。 结果，磁头的磁导率在高频带被改善。

公开(公告)号：US5256606A

公开(公告)日：1993-10-26

申请号：US891481

申请日：1992-05-28

申请人： Satoshi Maki

发明人： Satoshi Maki

IPC分类号： C03C3/07 ,  C03C3/072 ,  C03C3/074 ,  C03C3/102 ,  C03C8/10 ,  G11B5/105 ,  G11B5/127 ,  C03C3/108 ,  C03C3/70 ,  C03C3/72

CPC分类号： G11B5/105 ,  C03C3/07 ,  C03C3/072 ,  C03C3/0745 ,  C03C3/102

摘要： The present invention relates to a moisture resistant low melting point glass composition for a magnetic head and a magnetic head utilizing it. Said glass composition may be composed of 28-35% PbO, 38-50% SiO.sub.2, 3-10% R.sub.2 O, 3-8% TeO.sub.2, and 1-5% TiO.sub.2 in terms of mole ratio, or 30-40% PbO, 30-40% SiO.sub.2, 10-20% B.sub.2 O.sub.3, 8% or less TeO.sub.2 and 10% or less Bi.sub.2 O.sub.3, cr 30-40% PbO, 30-40% SiO.sub.2, 10-20% B.sub.2 O.sub.3, and 0-8% TeO.sub.2, or 30-40% PbO, 30-40% SiO.sub.2, 10-20% B.sub.2 O.sub.3, and 0-10% Bi.sub.2 O.sub.3.

摘要翻译： 本发明涉及一种用于磁头的防潮低熔点玻璃组合物和利用它的磁头。 所述玻璃组合物可以由28-35％的PbO，38-50％的SiO 2，3-10％的R 2 O，3-8％的TeO 2和1-5％的TiO 2以摩尔比或30-40％的PbO组成， 30-40％SiO2，10-20％B2O3，8％或更低的TeO2和10％或更少的Bi2O3，cr 30-40％的PbO，30-40％的SiO2，10-20％的B2O3和0-8％的TeO2， 或30-40％PbO，30-40％SiO2，10-20％B2O3和0-10％Bi2O3。