ALBERT

All Library Books, journals and Electronic Records Telegrafenberg

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
  • 1
    Electronic Resource
    Electronic Resource
    Effects of gas exposure on the surface-acoustic-wave attenuation and magnetoresistance of nickel thin films (1990)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 67 (1990), S. 4992-4994 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We present experimental data showing that both the magnetic bias field H-dependent attenuation response to microwave (0.6 GHz) surface acoustic waves A(H) and the dc magnetoresistance ΔR(H) of vacuum-evaporated nickel thin films (100–250 A(ring)) can significantly decrease or "age'' when the samples are maintained in vacuum after film deposition. However, these losses in A(H) and ΔR(H) response can be recovered by exposing the samples to air. These effects are reversible, that is, if the samples are again placed in vacuum; their A(H), ΔR(H) responses again decrease while subsequent exposure to air again results in a recovery of sample response. Exposure of vacuum-aged samples to Ar results in no change in sample response and a passivation of the sample against the subsequent effects of other gases. These phenomena are apparently due to reversible physiabsorption processes that affect the magnetostriction-stress contribution to film coercivity. Apart from their significance for the study of the impact of physical absorption processes on thin film micromagnetic structure, these "gas effects'' may have practical applications for modifying the response characteristics of magnetoelastic surface-wave devices and sensors.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.344700
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 2
    Electronic Resource
    Electronic Resource
    Permanent magnet film magneto-optic waveguide isolator : 38th Annual Conference on Magnetism and Magnetic Materials (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 75 (1994), S. 6286-6288 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Recent advances in high-coercivity planar-magnetization film magnets and Bi-YIG (bismuth-substituted yttrium iron garnet) film technology have opened up the possibility of fabricating very small magneto-optic devices. In this article we demonstrate that these two technologies can be brought together to fabricate a high performance waveguide magneto-optic isolator for use in integrated optical circuits. The device operates at 1.55-μm wavelength and consists of a waveguide etched into a Bi-YIG film whose magnetization is saturated by a 22-μm-thick TbCu7-type SmCo magnet with a coercivity of 4 kOe. Isolation ratios of 25 dB have been obtained in the wavelength region between 1490 and 1555 nm.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.355426
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 3
    Electronic Resource
    Electronic Resource
    Surface acoustic wave: Acoustogyric effect (1994)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 76 (1994), S. 2306-2309 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: An asymmetry is observed in the hysteretic surface acoustic wave (SAW) attenuation curve that is obtained when a magnetic field is applied in the plane of a magnetoelastic film which is deposited on the surface of the substrate carrying the SAW. We propose that a SAW acoustogyric effect may account for this asymmetry.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.357602
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 4
    Electronic Resource
    Electronic Resource
    Erratum: "Permanent magnet film magneto-optic waveguide isolator'' [J. Appl. Phys. 75, 6286 (1994)] (1995)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 77 (1995), S. 1333-1333 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.359611
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 5
    Electronic Resource
    Electronic Resource
    Characterization of thin films of YBa2Cu3O7−δ using an interdigital radio frequency proximity probe technique (1997)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 81 (1997), S. 6292-6296 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A capacitively coupled interdigital probe technique is described whereby the electrical characteristics of thin films at arbitrary frequencies in the range from about 100 kHz to beyond 1 GHz may be studied. Patterning of the film, deposition of electrodes, and bonding of electrical leads are unnecessary, so that all measurements are nondestructive and noninvasive. Preliminary measurements of the superconducting transition in thin films of the high-temperature superconductor YBa2Cu3O7−δ in magnetic fields up to 1.5 T are presented and discussed. They show a large field-dependent peak, attributable to tunneling effects, just below the onset temperature. Anomalies are also seen at higher temperatures, providing evidence of a structural phase transition. © 1997 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.364363
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 6
    Electronic Resource
    Electronic Resource
    Chemically assisted ion beam etching of submicron features in GaSb (1998)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 72 (1998), S. 1350-1352 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: We describe the use of chemically assisted ion beam etching to realize smooth, highly anisotropic features in GaSb. The measured etch rates are comparable to those of GaAs, and are fitted to a model that assumes the formation of trichloride etch product species. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.120570
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 7
    Electronic Resource
    Electronic Resource
    Enhanced magnetically tunable attenuation and relative velocity of 0.6 GHz Rayleigh waves in nickel thin films (1989)
    Woodbury, NY : American Institute of Physics (AIP)
    Applied Physics Letters 54 (1989), S. 995-997 
    Details
    ISSN: 1077-3118
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The magnetic field (H) dependences of the ultrasonic attenuation Δα(H) and the relative velocity ΔV(H) responses of 0.6 GHz Rayleigh-mode surface acoustic wave pulses in vacuum-evaporated, uniaxially anisotropic nickel thin films were measured and correlated with changes in the sample's dc magnetoresistance Δρ(H). Recent advances in film preparation techniques have resulted in low magnetic anisotropy dispersion samples with enhanced magnetoelastic responses at small H [Δα(H)≈80 dB/cm and ΔV(H)/V≈0.07% as H varies from 0 to 100 Oe].
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.100760
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 8
    Electronic Resource
    Electronic Resource
    Crystal ion slicing of single-crystal magnetic garnet films : The 7th joint MMM-intermag conference on magnetism and magnetic materials (1998)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 83 (1998), S. 6759-6761 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: Epitaxial liftoff has been used for achieving heterogeneous integration of many III-V and elemental semiconductor systems. However, it has been heretofore impossible to integrate devices of many other important material systems. A good example of this problem has been the integration of single-crystal transition metal oxides on semiconductor platforms, a system needed for on-chip thin film optical isolators. We report here an implementation of epitaxial liftoff in magnetic garnets. Deep ion implantation is used to create a buried sacrificial layer in single-crystal yttrium iron garnet (YIG) and bismuth-substituted YIG (Bi-YIG) epitaxial layers grown on gadolinium gallium garnet (GGG). The damage generated by the implantation induces a large etch selectivity between the sacrificial layer and the rest of the garnet. Ten-micron-thick films have been lifted off from the original GGG substrates by etching in phosphoric acid. Millimeter-size pieces of excellent quality have been transferred to the silicon and gallium arsenide substrates. Study of the magnetic domain structure in the detached epilayers by Faraday contrast shows no changes in film anisotropy. Optical insertion loss measurements are also presented. © 1998 American Institute of Physics.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.367673
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 9
    Electronic Resource
    Electronic Resource
    Magnetic field dependence of surface acoustic wave velocity and attenuation in nickel thin films (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 64 (1988), S. 5411-5413 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: The relative velocity ΔV(H)/V(H=0) and attenuation α(H) responses of 0.6 GHz Rayleigh-mode surface acoustic wave (SAW) pulses propagating through thin (〈400 A(ring)) films of nickel were measured as a function of in-film-plane dc magnetic bias field H. The films' dc magnetoresistive response ΔR(H) was also measured. The sample's ΔV(H)/V(H=0), α(H), and ΔR(H)/R(H=0) responses could be varied over respective ranges of 0.07%, 80 dB/cm, and 1.4% as H was varied from 0 to 90 Oe. Qualitative and semiquantitative correlations between ΔV(H) and α(H) indicate that the dynamic magnetoelastic coupling theoretically responsible for the previously observed SAW attenuation in nickel films also primarily determines the sample's relative velocity response. The correlated ΔV(H)/V, α(H), and ΔR(H)/R data provide a useful experimental basis for characterization of dynamic and static magnetoelastic effects in ferromagnetic films.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.342386
    Location Call Number Expected Availability
    BibTip Others were also interested in ...
    Paper (German National Licenses)
    Fulltext
  • 10
    Electronic Resource
    Electronic Resource
    Field-dependent behavior of longitudinal ultrasonic attenuation in UPt3 (1988)
    [S.l.] : American Institute of Physics (AIP)
    Journal of Applied Physics 63 (1988), S. 3420-3421 
    Details
    ISSN: 1089-7550
    Source: AIP Digital Archive
    Topics: Physics
    Notes: A possible phase transition is evident in the field dependent behavior of the ultrasonic attenuation in UPt3. In the low field region the behavior is linear and in the high field region close in Hc2 the behavior is quadratic in h'=(Hc2−H)/Hc2. At the crossover there is a small peak in the ultrasonic attenuation. The temperature dependence of the coefficients a(T), for the linear behavior, and b(T), for the quadratic behavior are obtained.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1063/1.340752
    Location Call Number Expected 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...