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This content will become publicly available on May 11, 2018

Title: Self-assembled Co-BaZrO 3 nanocomposite thin films with ultra-fine vertically aligned Co nanopillars

A simple one-step pulsed laser deposition (PLD) method has been applied to grow self-assembled metal-oxide nanocomposite thin films. The as-deposited Co-BaZrO 3 films show high epitaxial quality with ultra-fine vertically aligned Co nanopillars (diameter <5 nm) embeded in BZO matrix. The diameter of the nanopillars can be further tuned by varying the deposition frequency. The metal and oxide phases grow separately without inter-diffusion or mixing. Taking advantage of this unique structure, a high saturation magnetization of ~1375 emu/cm 3 in the Co- BaZrO 3 nanocomposites has been achieved and further confirmed by Lorentz microscopy imaging in TEM. Furthermore, the coercivity values of this nanocomposite thin films range from 600 Oe (20 Hz) to 1020 Oe (2 Hz), which makes the nanocomposite an ideal candidate for high-density perpendicular recording media.
Authors:
 [1] ;  [2] ;  [3] ;  [1] ;  [1] ;  [1] ; ORCiD logo [4]
  1. Purdue Univ., West Lafayette, IN (United States)
  2. Texas A & M Univ., College Station, TX (United States)
  3. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
  4. Purdue Univ., West Lafayette, IN (United States); Texas A & M Univ., College Station, TX (United States)
Publication Date:
Report Number(s):
SAND-2017-1871J
Journal ID: ISSN 2040-3364; NANOHL; 654097
Grant/Contract Number:
AC04-94AL85000
Type:
Accepted Manuscript
Journal Name:
Nanoscale
Additional Journal Information:
Journal Volume: 9; Journal Issue: 23; Journal ID: ISSN 2040-3364
Publisher:
Royal Society of Chemistry
Research Org:
Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
Sponsoring Org:
USDOE National Nuclear Security Administration (NNSA), Office of Defense Nuclear Security (NA-70)
Country of Publication:
United States
Language:
English
Subject:
77 NANOSCIENCE AND NANOTECHNOLOGY; metal-oxide nanocomposite; magnetic metal nanopillar; self-assembled; anisotropic magnetic property
OSTI Identifier:
1365810