“Whoa! It’s like Spotify but for academic articles.”

Instant Access to Thousands of Journals for just $40/month

Try 2 weeks free now

Moiré Patterns of Ion Implantation by Channeling



at a lower T left [N] unchanged. This observation makes it impossible to interpret the annealing-induced increase of [N] to an equilibrium level [N.] simply in terms of the production of isolated N on P sites as a consequence of the thermal dissociation of a complex center containing N. For typical crystals which behave as in curve 3, annealing at 800°C gives [N.]=8,2XlO I5 cm-' after 0.5 hand 1.6XlOI6 cm-' after 16.5 h but upon reannealing for lO min at 900°C, [N.]=3.8XI0 16 cm-'. For a thermally activated process, the activation energy would be greater than 5 eV, a value inconsistent with the rapid change in [N.] upon reannealing at the higher T. The value of [N.] may depend upon the solubility of an unidentified impurity or defect, which is itself dependent upon the pressure of P in the heattreatment ambient. As [N] changes with annealing, the line at 2.3286 eV disappears and the Ax line grows in intensity. Figure 3 shows a plot of [N], measured after annealing for 2 h at lOOO°C, versus the absorption coefficient at 2.3286 eV measured in the as-grown LEC crystals. The line drawn relates "'Ax and [N] in solution-grown crystals.' The



Journal of Applied PhysicsAmerican Institute of Physics

Published: Mar 1, 1971

DOI: 10.1063/1.1660179

Free Preview of First Page

Loading next page...

You’re reading a free preview. Subscribe to read the entire article.

DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy unlimited access and
personalized recommendations from
over 12 million articles from more than
10,000 peer-reviewed journals.

All for just $40/month

Try 2 weeks free now

Explore the DeepDyve Library

How DeepDyve Works

Spend time researching, not time worrying you’re buying articles that might not be useful.

Unlimited reading

Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.

Stay up to date

Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.

Organize your research

It’s easy to organize your research with our built-in tools.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from Springer, Elsevier, Nature, IEEE, Wiley-Blackwell and more.

All the latest content is available, no embargo periods.

See the journals in your area

Simple and Affordable Pricing

14-day free trial. Cancel anytime, with a 30-day money-back guarantee.

Monthly Plan

  • Read unlimited articles
  • Personalized recommendations
  • Print 20 pages per month
  • 20% off on PDF purchases
  • Organize your research
  • Get updates on your journals and topic searches


Best Deal — 25% off

Annual Plan

  • All the features of the Professional Plan, but for 25% off!
  • For the normal price of 10 articles elsewhere, you get one full year of unlimited access to articles.

billed annually