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  • 1
    Electronic Resource
    Electronic Resource
    Structure and recording characteristics for CoPtB(O) rigid disk media : 37th Annual conference on magnetism and magnetic materials (1993)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 73 (1993), S. 5572-5574 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Structure, magnetic properties and recording characteristics of the CoPtB(O) media with various underlayers were investigated. Recording performance of the CoPtB(O) perpendicular media is closely related to the crystallinity. Magnetic properties and recording characteristics are much improved by the Au seed layer, and higher reproduced output can be obtained at 200 kFRPI. CoPtB(O) perpendicular media show higher resolution than the CoPtB(O)/Cr longitudinal one. The reproduced output of perpendicular media at 200 kFRPI is more than 10 dB higher than that of the longitudinal one. Noise characteristics of both media are quite different in the recording density response. With increasing recording density, the media noise of longitudinal media slightly increases, while that of the perpendicular one gradually decreases. This means for the perpendicular media that the media noise might originate not from the magnetic transition but from the irregular magnetic reversals within recorded bits.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.353654
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  • 2
    Electronic Resource
    Electronic Resource
    Characterization of carbon adsorption to Si(100) surface by thermal desorption spectroscopy and x-ray photoelectron spectroscopy (1996)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 80 (1996), S. 4137-4140 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Carbon adsorption to the Si(100) surface in the atmosphere with large or with small concentrations of organic carbons is examined by using thermal desorption spectroscopy or x-ray photoelectron spectroscopy. The number of carbon atoms on a Si(100) wafer stored in the pure water, in which the total organic carbon is 285 ppb, becomes larger until a certain time with increasing time stored in pure water, and it keeps constant over that time. On the other hand, that stored in the air in the clean bench, where the concentration of the organic carbon is thought to be low, becomes small, and the increasing rate of the carbon atoms adsorbed on the Si(100) surface is very small. The difference between these results is due to whether the dominant step is the transportation of organic carbons in the atmosphere or it is the adsorption of organic carbons on the Si surface. The former process occurs for the small concentration of the organic carbons in the atmosphere, and the latter process occurs for the large concentration of them. Adsorption of the organic carbons dominates in the entire process in pure water under the present condition, and the transportation of them dominates in the entire process in the air of the clean bench under the present condition. From the relationship between C1s integral intensity and thickness of the native oxide, it is found that the adsorption of the carbon atoms has a close relationship with the growth of the native oxide on the Si surface. The adsorption site of the carbon atoms is also discussed from the viewpoint of stepped growth of the native oxide. © 1996 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.363286
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  • 3
    Electronic Resource
    Electronic Resource
    Effect of oxygen incorporation on magnetoresistance in Co/Cu multilayers : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6540-6542 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The background pressure dependence of magnetoresistance (MR) ratio of Co/Cu multilayer films and the effect of the Fe buffer layer were studied. Secondary ion mass spectrometry (SIMS) measurement of the films and in situ quadrupole mass spectrometry (QMS) analysis in conjunction with background pressure dependence of MR ratio confirmed that the oxidation of Co/Cu gives a crucial influence to the giant magnetoresistance (GMR) effect. The oxidation of Co/Cu weakens the antiferromagnetic coupling, and results in the low MR ratio. The Fe buffer layer absorbs the residual oxygen, and this leads to the increase of the MR ratio. The MR ratio of (Co1 nm/Cu1 nm)100/Fe2.5 nm film deposited under low background pressure and high deposition rate so as to suppress oxidation reached over 80% at RT and 160% at 2 K.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.356941
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  • 4
    Electronic Resource
    Electronic Resource
    Recording performance of the combination of magnetoresistive head and thin metal evaporated tape : The 41st annual conference on magnetism and magnetic materials (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 4527-4529 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Thin metal evaporated (ME) tape with low remanence-thickness product (Mrδ), high coercivity (Hc) and low noise was designed to match a magnetoresistive (MR) head. This article focuses on the high density recording performance of a shielded MR head/thin ME tape media designed for use with an MR head. The PW50 measurement was adopted to certify that the depth of recording was restricted by magnetic layer thickness. Reduced second harmonic distortion at low density shows saturation-free operation of the MR head. Frequency domain measurements indicate drastically reduced ac erase noise level and higher output level at short wave length. High readback density (neglecting intertrack interference) of 1.07 Gbits/in2 with signal-to-noise ratio (SNR) after equalization of 18.7 dB was attained for a FeNi (AMR) head and 1.29 Gbits/in.2 with SNR of 20.0 dB for a spin-valve (GMR) head. The performance of the MR head/thin ME tape system was compared to commercial ME tape and thin metal particulate tape in terms of noise characteristics, depth of recording, and SNR after equalization. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364941
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  • 5
    Electronic Resource
    Electronic Resource
    Substrate temperature effect on giant magnetoresistance of sputtered Co/Cu multilayers (1993)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 63 (1993), S. 2839-2841 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The relation between giant magnetoresistance (GMR) and the substrate temperature was investigated in sputtered Co/Cu multilayers. The magnetoresistance (MR) ratio is increased as the substrate temperature is decreased. The increase in the MR ratio is considered to be caused by the improvement in the sharpness of interfaces as concluded from the satellite peak intensity of the x-ray diffraction. The rough interfaces reduce the antiferromagnetic coupled areas and result in the MR ratio decrease. By lowering the substrate temperature to 20 °C, the MR ratio of 80% at room temperature was obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.110791
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  • 6
    Electronic Resource
    Electronic Resource
    Linearity of unshielded spin-valve sensors (1997)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 70 (1997), S. 523-525 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Linearity of the magnetoresistive (MR) transfer curve for an unshielded spin-valve (SV) sensor was studied. When the NiFe free layer thickness is greater than 5.0 nm, the anisotropic magnetoresistive (AMR) effect in it may overlap the giant magnetoresistive effect of the SV structure and deteriorate the linearity of the sensor response. By using a bilayer of NiFe/NiFeTa as the free layer for suppressing the AMR effect, superior linearity was obtained without a loss of the MR ratio. This new SV structure shows 5.0% as the MR ratio and −32.1 dB as second harmonic distortion, compared to −19.5 dB for a conventional one. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.118313
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  • 7
    Electronic Resource
    Electronic Resource
    Evaluation of diagonal earlobe crease as a marker of coronary artery disease: the use of this sign in pre-operative assessment* (2001)
    Oxford, UK : Blackwell Science Ltd
    Anaesthesia 56 (2001), S. 0 
    Details
    ISSN: 1365-2044
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Medicine
    Notes: In this study, we examined the usefulness of the earlobe crease sign as a marker of coronary artery disease in the pre-operative assessment of patients. We were interested in evaluating this sign for use in emergency patients. We investigated 530 patients, aged 〉 40 years, undergoing elective surgery. If the electrocardiogram was abnormal or the patient reported symptoms suggesting coronary artery disease, further cardiac examinations were performed. Patients who demonstrated evidence of coronary artery disease in the additional investigations or had a clear history of coronary artery disease were classified as the abnormal coronary group. Other patients with no history and/or normal investigations were classified as the normal coronary group. The assessment of earlobe crease sign was performed prior to anaesthesia, and the sensitivity, specificity and positive predictive value of this sign were calculated. We found that the sensitivity and specificity was high regardless of age, except for specificity in patients 〉 70 years old. The data suggest that the earlobe crease sign may be a useful marker for the presence of coronary artery disease in patients undergoing emergency operations in which little or no history and investigations are available. However, more work is required to assess the use of this sign in other ethnic groups.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1111/j.1365-2044.2001.02317.x
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  • 8
    Electronic Resource
    Electronic Resource
    Strength estimation of ceramic–metal joints with various interlayer thickness (2003)
    Oxford, UK : Blackwell Science, Ltd
    Fatigue & fracture of engineering materials & structures 26 (2003), S. 0 
    Details
    ISSN: 1460-2695
    Source: Blackwell Publishing Journal Backfiles 1879-2005
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Residual stresses generated by the mismatch of thermal expansion coefficients of ceramics and metals affect the strength of ceramic–metal joints. An interlayer metal can be inserted between the ceramic and metal in order to relax this stress. An analysis was carried out of the residual stresses produced during joint-cooling and in 4-point bending tests. The effects of interlayer thickness on ceramic–metal joint strength were then studied by considering a superimposed stress distribution of the residual stress and the bending stress. Finally, joint strength was estimated from fracture mechanics and strength probability analysis by considering the residual stress distribution, defect size and position of pre-existing defects in the ceramic parts. As a result of this study, we suggest an optimum material selection and interlayer thickness for ceramic–metal joint structures. This approach is generally suitable for the design of electrical and mechanical structures.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1046/j.1460-2695.2003.00581.x
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  • 9
    Electronic Resource
    Electronic Resource
    Macroscopic quantum tunneling in YBa"2Cu"3O"7"-"δ thin films
    Amsterdam : Elsevier
    Physica C: Superconductivity and its applications 235-240 (1994), S. 3321-3322 
    Details
    ISSN: 0921-4534
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0921-4534(94)91187-8
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  • 10
    Electronic Resource
    Electronic Resource
    Presence of a Vicia unijuga lectin-binding (vgu) glycoprotein with thomsen-friedenreich (t) activity and vgu glycoproteins in human primary hepatocellular carcinoma
    Amsterdam : Elsevier
    International Journal of Biochemistry 24 (1992), S. 1407-1419 
    Details
    ISSN: 0020-711X
    Source: Elsevier Journal Backfiles on ScienceDirect 1907 - 2002
    Topics: Biology , Chemistry and Pharmacology
    Type of Medium: Electronic Resource
    URL: http://linkinghub.elsevier.com/retrieve/pii/0020-711X(92)90066-A
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