APL Nameplate
  • Volume/Page
  • Keyword
  • DOI
  • Citation
  • Advanced
   
 
 
 

Flickr Twitter iResearch App Facebook

BROWSE VOLUMES

Year Range: 
Search Issue | RSS Feeds RSS
Previous Issue Next Issue

5 Oct 1998

Volume 73, Issue 14, pp. 1925-2058

Return to All Sections
back to top
RSS Feeds

Ferromagnetic resonance force microscopy on microscopic cobalt single layer films

Z. Zhang, P. C. Hammel, M. Midzor, M. L. Roukes, and J. R. Childress

Appl. Phys. Lett. 73, 2036 (1998); http://dx.doi.org/10.1063/1.122359 (3 pages) | Cited 28 times

Full Text: Read Online (HTML) | Download PDF

Show Abstract
We report mechanical detection of ferromagnetic resonance (FMR) signals from microscopic Co single layer thin films using a magnetic resonance force microscope (MRFM). Variations in the magnetic anisotropy field and the inhomogeneity of were clearly observed in the FMR spectra of microscopic Co thin films 500 and 1000 Å thick and ∼ 40×200 μm2 in lateral extent. This demonstrates the important potential that MRFM detection of FMR holds for microscopic characterization of spatial distribution of magnetic properties in magnetic layered materials and devices. © 1998 American Institute of Physics.
Show PACS
76.50.+g Ferromagnetic, antiferromagnetic, and ferrimagnetic resonances; spin-wave resonance
75.70.Ak Magnetic properties of monolayers and thin films
68.37.Ef Scanning tunneling microscopy (including chemistry induced with STM)
68.37.Ps Atomic force microscopy (AFM)
68.37.Rt Magnetic force microscopy (MFM)
68.37.Uv Near-field scanning microscopy and spectroscopy
75.50.Cc Other ferromagnetic metals and alloys
75.30.Gw Magnetic anisotropy

Phase transitions in ferrimagnetic and ferroelectric ceramics by ac measurements

A. Peláiz-Barranco, M. P. Gutiérrez-Amador, A. Huanosta, and R. Valenzuela

Appl. Phys. Lett. 73, 2039 (1998); http://dx.doi.org/10.1063/1.122360 (3 pages) | Cited 37 times

Full Text: Read Online (HTML) | Download PDF

Show Abstract
Ac conductivity measurements were carried out on polycrystalline samples of a ferrimagnetic spinel (Zn0.44Mn0.56Fe2O4) and a ferroelectric perovskite (Sr0.25Bi4Ti3.25O12.75), in the temperature range 20–160 and 20–660 °C, respectively, and in the frequency range 5 Hz–13 MHz. The impedance response in both cases could be resolved into two contributions, associated with the bulk (grains) and the grain boundaries. An analysis by means of the ac conductivity power law showed evidence of a critical temperature of 132 and 536 °C, for the ferrimagnetic and the ferroelectric samples, respectively, which corresponds to the Curie temperature for each type of material. These results are interpreted in terms of the disorder increase approaching the phase transition. © 1998 American Institute of Physics.
Show PACS
72.20.Fr Low-field transport and mobility; piezoresistance
72.80.Sk Insulators
75.50.Gg Ferrimagnetics
77.84.Ek Niobates and tantalates
77.84.Cg PZT ceramics and other titanates
75.30.Kz Magnetic phase boundaries (including classical and quantum magnetic transitions, metamagnetism, etc.)
75.40.-s Critical-point effects, specific heats, short-range order
77.80.B- Phase transitions and Curie point
81.05.Je Ceramics and refractories (including borides, carbides, hydrides, nitrides, oxides, and silicides)
Return to All Sections
Close

Google Calendar

ADVERTISEMENT

Go to AIP Home   © AIP Publishing LLC
close