PROBLEM TO BE SOLVED: To provide a bottom spin valve magnetometric sensor using GMR, which can read out magnetic information with a surface recording density exceeding 9.3 x 104 Gbit/m2.;SOLUTION: A new seed layer which consists of NiCr whose Cr(chromium) percentage content is 31at % and has thickness of about 3nm, is used for forming the bottom spin valve magnetometric sensor having a synthetic antiferromagnetic pinned layer. Providing this seed layer regenerates a magnetic medium which is recorded with a recording density exceeding 9.3 x 104 Gbit/m2(=60 Gbit/inch2). That is, providing this seed layer enables forming a pinning layer (MnPt layer) which is very thin (thickness of about 8 nm) similarly as a pinned layer or a free layer. Further, giving a high pinning magnetic field and optimizing a magnetostriction value makes a very hard magnetometric sensor.;COPYRIGHT: (C)2004,JPO&NCIPI
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机译：解决的问题：提供一种使用GMR的底部自旋阀磁力传感器，该传感器可以读取表面记录密度超过9.3 x 10 4 Gbit / m 2 的磁信息。解决方案：新的籽晶层由NiCr组成，其Ni（Cr）含量为31at％，厚度约为3nm，用于形成具有合成反铁磁固定层的底部自旋阀磁力传感器。提供该种子层可再生磁性介质，该介质以超过9.3 x 10 4 Gbit / m 2 （= 60 Gbit / inch 2 ）。也就是说，提供该种子层使得能够形成与被钉扎层或自由层相似的非常薄（厚度约8nm）的钉扎层（MnPt层）。此外，提供高钉扎磁场并优化磁致伸缩值使磁传感器非常坚固。;版权所有：（C）2004，JPO＆NCIPI
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