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Hyperfine Interactions

, Volume 85, Issue 1, pp 251–258 | Cite as

The spin turning in ferromagnetic Gd studied by positive muons

  • O. Hartmann
  • E. Karlsson
  • R. Wäppling
  • L. Asch
  • S. Henneberger
  • G. M. Kalvius
  • A. Kratzer
  • H. -H. Klauß
  • F. J. Litterst
  • M. A. C. De Melo
Session 2. Magnetism

Abstract

We have studied the muon precession frequency in a ferromagnetic single crystal of Gd metal. The overall features of our findings are compatible with earlier results on polycrystalline material. In the temperature region between 245 and 220 K where the Gd magnetization starts to turn away from the c-axis, we observe an increase in the muon depolarization rate, and a complex precession signal which can be separated into two frequency components meaning that spin turning does not occur simultaneously in different parts of the sample (domains). From these more detailed data follows that previously obtained values forBfc andBdip can not both be correct. Two explanations for our new result are possible: EitherBfc undergoes a change around 230 K which is directly coupled to the spin turning angle, or the value of the dipolar field contribution used in the earlier evaluation is too low. This imposes some uncertainty as to the value of the angle at the onset of spin turning derived fromμSR frequencies.

Keywords

Thin Film Temperature Region Early Result Frequency Component Detailed Data 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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References

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Copyright information

© J.C. Baltzer AG, Science Publishers 1994

Authors and Affiliations

  • O. Hartmann
    • 1
  • E. Karlsson
    • 1
  • R. Wäppling
    • 1
  • L. Asch
    • 2
  • S. Henneberger
    • 2
  • G. M. Kalvius
    • 2
  • A. Kratzer
    • 2
  • H. -H. Klauß
    • 3
  • F. J. Litterst
    • 3
  • M. A. C. De Melo
    • 3
  1. 1.Physics Dept.Uppsala UniversityUppsalaSweden
  2. 2.Physics Dept.TU MunichGarchingFRG
  3. 3.Institute for Metal PhysicsTU BraunschweigBraunschweigFRG

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