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    • 22. 发明专利
    • MAGNETIC SENSOR AND MAGNETIC RECORDING AND REPRODUCING DEVICE
    • JP2000260011A
    • 2000-09-22
    • JP5973999
    • 1999-03-08
    • HITACHI LTD
    • HIRANO TATSUMIUSAMI KATSUHISAUEDA KAZUHIROHOSHIYA HIROYUKIIMAGAWA TAKAO
    • G11B5/39
    • PROBLEM TO BE SOLVED: To obtain a spin valve film with which an improvement in heat resistance can be expected and which have a high exchanged bond magnetic field by forming an antiferromagnetic layer having a rhombic crystal structure, taking the basic axes of the unit lattice of the crystal structure at a prescribed axis intersecting orthogonally within the film plane and a prescribed axis of the film normal and specifying the misalignment quantity of either of the basic axes of the rhombic crystal within a specific range. SOLUTION: The spin valve films are formed by deposition of Ta, NiFe, CoFe, Cu, Co, CrMnPt and Ta respective at prescribed film thickness on a substrate. The CrMnPt which is an antiferromagnetic layer is the rhombic crystal. The misalignment quantity from the cubic crystal to the rhombic crystal is preferably so set that the misalignment quantity of either of the basic axes of the rhombic crystal is within a range of 0.5 to 10% when the misalignment quantity of the rhombic crystal with respect to the cubic crystal is defined as |a-a'|/a'×100(%) by taking the basic axes of the unit lattice of the rhombic crystal at (a), (b) intersecting orthogonally within the film plane and the (c) axis of the film normal and taking the basic axis of the cubic crystal of the same volume as the volume of the unit lattice at the (a') axis.
    • 23. 发明专利
    • DOUBLE WAVELENGTH X-RAY SCATTERING METHOD AND THIN FILM EVALUATION DEVICE
    • JPH11174003A
    • 1999-07-02
    • JP34465397
    • 1997-12-15
    • HITACHI LTD
    • UEDA KAZUHIROHIRANO TATSUMI
    • G01N23/20G01N23/207
    • PROBLEM TO BE SOLVED: To precisely decide an incident angle of an X-ray onto a sample surface in a short time so as to perform centering of the sample quickly with high precision by being incident X-rays onto a sample with a fixed incident angle, measuring outgoing radiation dependency of scattered X-ray strength from the sample at two or more wavelengths, and finding a difference of a Yoneda peak position due to a wavelength difference. SOLUTION: By means of a sample supporting base holding incident X-rays including two or more wavelengths and a sample, a goniometer shifting and turning the sample, and an X-ray device arranged on a turntable coaxially with the rotation axis of the sample, the sample is prepared so as to be set parallelly to the incident X-ray by means of a half-splitting method and the like. Then, X-rays are incident on the sample at a predetermined incident angle, and a strength distribution to an outgoing radiation angle of the scattered X-rays generated from the sample is measured at two or more wavelengths. On the basis of a difference of Yoneda peak position due to a difference of a wavelength between the strength distributions measured at the respective wavelengths, an incident position is decided accurately. In this way, centering of the sample can be performed quickly with high precision.
    • 24. 发明专利
    • X-RAY ANALYZER
    • JPH0915392A
    • 1997-01-17
    • JP16175395
    • 1995-06-28
    • HITACHI LTD
    • UEDA KAZUHIROUSAMI KATSUHISA
    • G01B15/02G01N23/00G21K1/04G21K1/06
    • PURPOSE: To detect incident X-ray in an irradiation region equalized for sample surface by changing the slit width of at least one of incidence and emission limiting slits in accordance with the incidence angle or emission angle of X-ray to or from the sample. CONSTITUTION: An incident X-ray width limiting slit 2 limits the width and height of the X-ray from an X-ray source and introduces as incidence light 3 with width T on a sample 5 with an incidence angle (ω) and width (t). Here, T=t/sinω. Emission X-ray 6 reflected and diffracted at the irradiated emission region 4 and generated fluorescence X-ray 11 are limited in width and height with emission limiting slits 7, 9 and individually measured with X-ray detectors 8, 10. If the slit 2 width is varied in accordance with the incidence angle ωat this moment, the dependency on incidence angle in the measuring region is eliminated. Similarly, if the width of slits 7, 9 is varied in accordance with the emission angle, the dependency of emission angle in the measuring region is eliminated. In this manner, the intensity of diffracted, reflected and fluorescent X-ray from an equal sample area can be measured with high accuracy.
    • 26. 发明专利
    • Low vacuum soft x-ray experiment device
    • 低真空软X射线实验装置
    • JP2013072785A
    • 2013-04-22
    • JP2011212948
    • 2011-09-28
    • Hitachi Ltd株式会社日立製作所
    • NANBU AKIRAUEDA KAZUHIROYONEYAMA AKIO
    • G21K5/00G21K5/02H05G2/00
    • PROBLEM TO BE SOLVED: To provide a low vacuum soft X-ray experiment device which is capable of performing a soft X-ray irradiation experiment in a low vacuum region without destroying ultra high vacuum of a synchrotron, and is excellent in operability and visibility of a sample.SOLUTION: In the low vacuum soft X-ray experiment device, in an experiment tank 8 which is connected through difference exhaust chambers (3, 5) with a radiation beam line 1 of the ultra high vacuum (Pbl 1×10Torr), an orifice of a final stage is installed at a distal end of a conical pipe 6. Also, the experiment tank 8 in which a sample 7 is arranged is constituted of a transparent member.
    • 解决的问题:提供能够在低真空区域进行软X射线照射实验而不破坏同步加速器的超高真空的低真空软X射线实验装置,并且操作性优异 和样品的可视性。 解决方案:在低真空软X射线实验装置中,在通过差分排气室(3,5)与超高真空(Pbl <1×10)的辐射束1连接的实验槽8中 保持低真空(Pex> 1×10 - 2 Torr),最终的孔 台阶安装在锥形管6的远端。另外,其中配置有试样7的实验槽8由透明构件构成。 版权所有(C)2013,JPO&INPIT
    • 29. 发明专利
    • Method and apparatus for inspecting laminated thin film
    • 用于检查层压薄膜的方法和装置
    • JP2003065977A
    • 2003-03-05
    • JP2001260515
    • 2001-08-30
    • Hitachi Ltd株式会社日立製作所
    • HIRANO TATSUMIUEDA KAZUHIRO
    • G01N23/20G11B5/39
    • PROBLEM TO BE SOLVED: To provide a method and an apparatus for inspecting laminated thin films whereby a film thickness and a density of an nm oxide film of a magnetic resistance type sensor or the like can be quickly measured and analyzed while hardly affected by a change of film thicknesses and densities of the other laminated thin films. SOLUTION: In the method for inspecting the laminated thin film by which a layer structure of the laminated thin film is inspected by sending X rays by a low angle θinto a laminated body having two or more thin films formed on a substrate, measuring an X-ray reflectivity from the laminated thin film and analyzing the reflectivity, when a refractive index of the thin film is made n=1-(λ/4π) (ξ+iη) wherein λ is an X-ray wavelength by a unit of Å, the X-ray wavelength whereby a square of a refractive index difference at an interface of the laminated film other than the test object ΔN =Δξ +Δη becomes 1.5×10 or smaller is used, and a criterion whereby a square sum of a residual between the reflectivity from a laminated thin film as a standard and the reflectivity from the laminated thin film as the test object becomes not larger than an allowable value calculated from the change of the density and the film thickness is set. The apparatus for inspecting the laminated thin film is provided with an analysis means based on the inspection method.
    • 要解决的问题:提供一种用于检查层压薄膜的方法和装置,由此可以快速测量和分析磁阻型传感器等的nm氧化膜的膜厚度和密度,同时几乎不受变化的影响 的其他层压薄膜的膜厚度和密度。 解决方案:在层叠薄膜的层状结构的检查方法中,通过以低角度θ将X射线发送到具有形成在基板上的两层以上的薄膜的层叠体来检查层叠薄膜, 并且当薄膜的折射率为n = 1-(λ/4π)<2>(ξ+iη)时,分析反射率,其中λ是单位的X射线波长 的X射线波长,其中除了被测试对象ΔN<2> =Δξ2 +Δη2之外的层叠膜的界面处的折射率差的平方为1.5×10 -8 或更小的标准,其中作为标准的叠层薄膜的反射率和作为测试对象的层叠薄膜的反射率之间的残差的平方和不等于由变化所计算的允许值 设定密度和膜厚度。 用于检查层压薄膜的装置设有基于检查方法的分析装置。