公开(公告)号：US5741541A

公开(公告)日：1998-04-21

申请号：US749643

申请日：1996-11-15

申请人： Etsuro Ikeda ,  Masahiro Kikkawa ,  Takashi Kishi

发明人： Etsuro Ikeda ,  Masahiro Kikkawa ,  Takashi Kishi

IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B5/85 ,  C23C14/00

CPC分类号： G11B11/10591 ,  G11B11/10586 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12549 ,  Y10T428/12576 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/24975 ,  Y10T428/265

摘要： In a magneto-optical recording medium having a substrate, a recording layer having at least a rare earth-transition metal alloy film formed on the substrate, and a dielectric layer formed on the recording layer, a depth of penetration in the recording layer for an element derived from the dielectric layer is set to 70 .ANG. or less from an interface between the recording layer and the dielectric layer in a depth-directional film structure analysis by an Auger electron spectroscopy. Accordingly, mixing of impurities into the recording layer can be suppressed to thereby lower the value of the required recording magnetic field.

摘要翻译： 在具有基板的磁光记录介质中，至少在基板上形成有稀土过渡金属合金膜的记录层和形成在记录层上的电介质层，在记录层中的穿透深度 通过俄歇电子能谱法在深度方向的膜结构分析中，从介电层得到的元素从记录层和电介质层之间的界面设定为70以下。 因此，可以抑制杂质混入记录层，从而降低所需记录磁场的值。

公开(公告)号：US5585197A

公开(公告)日：1996-12-17

申请号：US289346

申请日：1994-08-11

申请人： Etsuro Ikeda ,  Masahiro Kikkawa ,  Takashi Kishi

发明人： Etsuro Ikeda ,  Masahiro Kikkawa ,  Takashi Kishi

IPC分类号： G11B11/10 ,  G11B11/105 ,  G11B5/72

CPC分类号： G11B11/10591 ,  G11B11/10586 ,  Y10S428/90 ,  Y10S428/928 ,  Y10T428/12465 ,  Y10T428/12549 ,  Y10T428/12576 ,  Y10T428/1259 ,  Y10T428/12611 ,  Y10T428/24975 ,  Y10T428/265

摘要： In a magneto-optical recording medium having a substrate, a recording layer having at least a rare earth-transition metal alloy film formed on the substrate, and a dielectric layer formed on the recording layer, a depth of penetration in the recording layer for an element derived from the dielectric layer is set to 70.ANG. or less from an interface between the recording layer and the dielectric layer in a depth-directional film structure analysis by an Auger electron spectroscopy. Accordingly, mixing of impurities into the recording layer can be suppressed to thereby lower the value of the required recording magnetic field.

摘要翻译： 在具有基板的磁光记录介质中，至少在基板上形成有稀土过渡金属合金膜的记录层和形成在记录层上的电介质层，在记录层中的穿透深度 通过俄歇电子能谱法在深度方向的膜结构分析中，从介电层得到的元素从记录层和电介质层之间的界面设定为70以下。 因此，可以抑制杂质混入记录层，从而降低所需记录磁场的值。

公开(公告)号：US5475551A

公开(公告)日：1995-12-12

申请号：US272324

申请日：1994-07-08

申请人： Junichi Honda ,  Seiji Kumagai ,  Norikatsu Fujisawa ,  Masatoshi Hayakawa ,  Masahiro Kikkawa ,  Miho Suzuki

发明人： Junichi Honda ,  Seiji Kumagai ,  Norikatsu Fujisawa ,  Masatoshi Hayakawa ,  Masahiro Kikkawa ,  Miho Suzuki

IPC分类号： G11B5/133 ,  G11B5/187 ,  G11B5/193 ,  G11B5/23 ,  G11B5/235

CPC分类号： G11B5/235 ,  G11B5/193

摘要： A magnetic head has a pair of magnetic core substrates formed of an oxide magnetic material, at least one of the magnetic core substrates having a gap film formed on an abutment surface thereof, the pair of magnetic core substrates being abutted to each other on the gap film as abutment surfaces, having a magnetic gap formed between them. The gap film is formed of platinum, the platinum group, or an alloy consisting mainly of platinum or the platinum group. The pair of magnetic core substrates are bonded to each other to be integrated into one unit by a non-magnetic glass. The magnetic gap has a track width of not greater than 50 .mu.m. The gap film has a thickness of not greater than 150 nm. The magnetic head includes a pair of magnetic core substrates formed of an oxide magnetic material, at least one of the magnetic core substrates having a gap film formed on an abutment surface thereof, the pair of magnetic core substrates being abutted to each other on the gap film as abutment surfaces, having a magnetic gap formed between them. The gap film is selectively formed of Cr or an alloy consisting mainly of Cr, Ti or an alloy consisting mainly of Ti, or Ta.sub.2 O.sub.5 or an oxide consisting mainly of Ta.sub.2 O.sub.5. At least one of the pair of magnetic core substrates has its abutment surface inversely sputtered and then has a gap film formed thereon.

摘要翻译： 磁头具有由氧化物磁性材料形成的一对磁芯基板，所述磁芯基板中的至少一个在其邻接表面上形成有间隙膜，所述一对磁芯基板在间隙上彼此抵接 膜作为邻接表面，在它们之间形成有磁隙。 间隙膜由铂，铂族基团或主要由铂或铂族组成的合金形成。 一对磁芯基板通过非磁性玻璃彼此结合成一个单元。 磁隙具有不大于50μm的轨道宽度。 间隙膜的厚度不大于150nm。 磁头包括由氧化物磁性材料形成的一对磁芯基板，至少一个磁芯基板在其邻接表面上形成有间隙膜，该一对磁芯基板在间隙上彼此抵接 膜作为邻接表面，在它们之间形成有磁隙。 间隙膜由Cr或主要由Cr，Ti或主要由Ti或Ta2O5组成的合金或主要由Ta 2 O 5组成的氧化物组成的合金选择性地形成。 所述一对磁芯基板中的至少一个具有抵靠面反向溅射，然后在其上形成间隙膜。