Library

X
feed icon rss

Your email was sent successfully. Check your inbox.

An error occurred while sending the email. Please try again.

Proceed reservation?

Export
Filter
  • Articles: DFG German National Licenses  (76)
  • 1990-1994  (76)
  • 1
    Electronic Resource
    Electronic Resource
    Magneto-optic disks for high-density recording with a shorter wavelength laser (abstract) : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 4773-4773 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: In order to increase the recording density of the optic disks, it is necessary to shorten the wavelength of the laser beams. Recently, Pt/Co multilayered films have been investigated for the optic recording media using the laser with the wavelength shorter than 600 nm because of the high Kerr rotation. It is, however, difficult to write the magnetic domains with the diameter less than 0.5 μm stably due to the small coercivity and the uniaxial anisotropy field. On the other hand, it is easy to write the domains with the diameter of 0.3 μm on the conventional media of TbFeCo. To use this advantage, the exchange-coupled double-layered film of (Pt/Co)/(TbFeCo) has been developed. The disk structure is Al-alloy/nitride/(Pt/Co)/TbFeCo/nitride/substrate. The multilayered film of Pt/Co has been optimized to write smaller domains and have a higher Kerr rotation for high output signal. Consequently, the thickness is 20 A(ring)/5 A(ring), respectively. It has been confirmed that the 0.3 μm φ domains can be written clearly and the figure of merit (square root of)Rθk is twice as large as that of the conventional TbFeCo at the short wavelength region of 400–500 nm. Finally, the read/write characteristics have been tested with the SHG laser of 532 nm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.348275
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    The head crash induced by liquefaction of gases : 35th annual conference on magnetism and magnetic materials (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 5742-5744 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The most frustrating type of head crash is one that wipes out data on one track after thousands of hours of stable operation. Analysis of debris gives few clues as to its cause. This paper explains this type of head crash and identifies the liquefaction of organic gases on the taper section of the head slider as its primary cause. Both theoretical considerations and experimental results are presented.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347907
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Magnetic anisotropy induced by cold rolling in Co and Co-Fe alloys (1991)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 69 (1991), S. 396-403 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The roll reduction and concentration dependences of the uniaxial magnetic anisotropy induced by cold-rolling, Kur, were investigated for hexagonal Co and Co-Fe alloys. The maximum value of Kur was 3×105 erg/cm3 at 10%–20% roll reduction for Co and Co-1.5% Fe. The easy direction was perpendicular and parallel to the rolling direction for the alloys containing less than 1.2% Fe and more than 1.2% Fe at room temperature, respectively. The easy direction of Kur changed at 260 °C for Co. The texture produced by cold-rolling was detected by Schulz's method. The induced anisotropies were evaluated by using the Ku1, Ku2, and the x-ray reflected intensities. The calculated values and easy direction agreed well with the experimental results. The origin of Kur for hexagonal Co and Co-Fe alloys is clearly explained by formation of rolling texture.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.347728
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Vibrational spectra of aniline–Arn van der Waals cations (n=1 and 2) observed by two-color "threshold photoelectron'' [zero kinetic energy (ZEKE)-photoelectron] spectroscopy (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 96 (1992), S. 6399-6406 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: Measurements of mass-selected ion-current and threshold photoelectron spectra of jet-cooled aniline–Arn van der Waals complexes (n=1 and 2) have been carried out with a two-color resonantly enhanced multiphoton ionization (REMPI) technique using a high-resolution threshold photoelectron analyzer developed in this laboratory. From our (1+1') REMPI experiments via the respective excited S1 states, we have obtained photoelectron spectra with well-resolved vibrational progressions due to "low-frequency van der Waals modes'' of the cations; νvdW=16 cm−1 (n=1) and νvdW=11 cm−1 (n=2). From Franck–Condon calculations, we have assigned these low-frequency vibrations to the "van der Waals bending'' of the cations. We have also found that the angles of the van der Waals bonds in the cations are changed by 8.2 (n=1) and 8.8 (n=2) degrees with respect to the S1 states. The adiabatic ionization potentials (Ia) of aniline and the aniline–Arn complexes (n=1 and 2) have been determined as 62 268±4 cm−1 (aniline), 62 157±4 cm−1 (n=1), and 62 049±4 cm−1 (n=2). Their shifts ΔIa are 111 cm−1 (n=1) and 219 cm−1 (n=2) with respect to aniline. Spectral shifts due to complex formation have been observed for a total of 13 ring modes of the cations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.462634
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Absence of photoelectron spectroscopic evidence for "proton tunneling'' in the cation ground state of jet-cooled tropolone (1991)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 95 (1991), S. 9401-9403 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: From our high resolution REMPI threshold photoelectron measurements of jet-cooled tropolone, it has been found that no spectral doublet showing "proton tunneling'' in the cation ground state (D0) is observed within an experimental accuracy of 2 cm−1. The adiabatic ionization potential was obtained as Ia=68 365±5 cm−1.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.461168
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    A study of phenylacetylene and styrene, and their argon complexes PA–Ar and ST–Ar with laser threshold photoelectron spectroscopy (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 8926-8933 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In this work, the molecules styrene (ST) and phenylacetylene (PA), as well as their argon complexes ST–Ar and PA–Ar, have been investigated with (1+1') resonance enhanced multiphoton ionization (REMPI) threshold photoelectron spectroscopy (TES). The first adiabatic ionization energies of ST, PA, ST–Ar, and PA–Ar have been measured as 68 267±5, 71 175±5, 68 151±5, and 71 027±5 cm−1, respectively. For both ST–Ar and PA–Ar, the first photoelectron band shows structure in the lowest frequency van der Waals (vdW) bending mode in the ground ionic state, with νvdW being measured as 15 cm−1 in each case. For each molecule excitation to a particular vibrational level of the S1 state followed by ionization, allows structure in that mode to be observed in the threshold photoelectron spectrum. This has been achieved for three modes in both styrene and phenylacetylene. The experimental ionic vibrational frequencies thus obtained, have been compared with those known for the S0 and S1 states.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.463367
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Cation vibrational spectroscopy of trans and gauche n-propylbenzene rotational isomers. Two-color threshold photoelectron study and ab initio calculations (1992)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 97 (1992), S. 2920-2927 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In this paper, a full account of an earlier report [Takahashi, Okuyama, and Kimura, J. Mol. Struct. 249, 47 (1991)] on the cation vibrational spectra of trans and gauche n-propylbenzene, which were obtained by means of a two-color (1+1') multiphoton ionization threshold photoelectron technique is presented. The trans and gauche cations were separately produced by (1+1') multiphoton ionization resonant through the S1 vibronic levels of n-propylbenzene in supersonic free jets in which both the trans and gauche isomers exist. From the observed threshold photoelectron spectra, adiabatic ionization energies are determined as Ia(trans)=70 278 cm−1 (8.7134 eV) and Ia(gauche)=70 420 cm−1 (8.7311 eV) with an accuracy of ±8 cm−1 (±1 meV). Furthermore, four benzene ring modes (6b+, 1+, 12+, and 18a+) as well as several low-frequency torsional and bending modes have been identified which are sensitive to the relative conformations of the n-propyl group with respect to the benzene ring [(trans)+: 82, 212, and 300 cm−1; (gauche)+: 46, 73, 207, and 252 cm−1]. The present vibrational assignments of the trans and gauche cations are based on a normal mode analysis performed for the trans cation by ab initio calculations. In the present work, this technique is demonstrated to be quite powerful for distinguishing the vibrational spectra of different cation isomers.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.463033
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Reply to the Comment on: Cation vibrational spectroscopy of trans and gauche n-propylbenzene rotational isomers. Two-color threshold photoelectron study and ab initio calculations (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 98 (1993), S. 5109-5109 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: In connection with the Comment by Liu and Zhou [J. Chem. Phys. 98, 0000 (1993)] on our paper [J. Chem. Phys. 97, 2920 (1992)], the following can be pointed out. Although our ab initio calculations with the STO-2G basis set are not sufficient, we have obtained some useful information from symmetry consideration which supports our experimental vibrational assignments of the trans n-propylbenzene cation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.464938
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    The role of electronic and geometric factors in "proton tunneling:'' A comparative study of tropolone and 9-hydroxyphenalenone by threshold photoelectron spectroscopy (1993)
    College Park, Md. : American Institute of Physics (AIP)
    The Journal of Chemical Physics 99 (1993), S. 56-66 
    Details
    ISSN: 1089-7690
    Source: AIP Digital Archive
    Topics: Physics , Chemistry and Pharmacology
    Notes: High resolution two-color threshold photoelectron spectra of tropolone and 9-hydroxyphenalenone (9-HPO) isolated in a free jet expansion have been measured to study the proton tunneling phenomena in the cation ground state (D0). The tunneling splitting widths of the D0 zeroth vibrational level for the both molecules lie within our experimental accuracy (2 cm−1), indicating that the proton tunneling is inhibited when compared to that obtained in their respective neutral states. By means of a comparative study of these two molecules, the tunneling inhibition has been explained in terms of a large contribution from the electronic factor which represents the changes in charge distribution of the π electrons upon ionization. The geometric factor, which is associated with the ring planarity is less important in determining the rate of tunneling in the D0 state. In the case of tropolone, we have found that the measurement of an out-of-plane skeletal vibration in various electronic states make it possible to describe the tunneling path at a higher level than a simple one-dimensional description. Moreover, the adiabatic ionization energies of 9-HPO and the deuterated 9-HPO have been determined accurately to be 65 338±5 cm−1 (8.1009±0.0006 eV) and 65 350±5 cm−1 (8.1024±0.0006 eV), respectively.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.465783
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Development of compact synchrotron light source LUNA for x-ray lithography : Proceedings of the 4th international conference on synchrotron radiation instrumentation (1992)
    [S.l.] : American Institute of Physics (AIP)
    Review of Scientific Instruments 63 (1992), S. 767-769 
    Details
    ISSN: 1089-7623
    Source: AIP Digital Archive
    Topics: Physics , Electrical Engineering, Measurement and Control Technology
    Notes: A compact synchrotron light source LUNA has been developed by Ishikawajima-Harima Heavy Industries Co., Ltd. (IHI), especially for x-ray lithography. It consists of a 45-MeV linac as an electron injector and an 800-MeV synchrotron. The peak wavelength of synchrotron radiation is around 10 A(ring). The installation of LUNA was completed in April 1989 at the Tsuchiura Facility of IHI. The synchrotron radiation was first observed in December 1989. A stored beam current of 50 mA at 800 MeV and a lifetime over 1 h have been achieved. At present, experiments are still continuing to increase the stored current and the lifetime. X-ray lithography testing is scheduled to begin in a clean room in this facility. This paper describes the outline of LUNA and the present status.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.1142657
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
Close ⊗
This website uses cookies and the analysis tool Matomo. More information can be found here...