93
Views
6
CrossRef citations to date
0
Altmetric
Original Articles

Magnetic excitations in the crystalline and quasicrystalline Zn–Mg–Ho phases

&
Pages 2939-2946 | Received 15 Sep 2006, Accepted 25 Oct 2006, Published online: 02 Dec 2010
 

Abstract

A comparative study has been carried out on magnetic excitations in the primitive- (p-) and face-centred- (f-) icosahedral quasicrystalline phases, as well as crystalline phase, in the Zn–Mg–Ho system. The magnetic excitation spectrum in both the quasicrystalline phases has only a broad quasielastic peak centred at the elastic position; the signal for the positive energy-transfer (ℏω) side is found to be almost temperature independent in a wide temperature range 1.5 <T <200K. The magnetic excitation spectrum in the crystalline Zn65.2Mg27.9Ho6.9 phase is quite similar to that of the quasicrystalline phases at high temperatures; however, well-defined inelastic peaks due to crystalline-electric-field (CEF) splitting levels appear as the temperature is decreased. The appearance of the sharp CEF peaks confirms well-defined site symmetry around the rare-earth sites in the hexagonal phase, whereas the temperature-independent quasielastic signal suggests anomalous spin fluctuations in the quasicrystalline phases.

Acknowledgements

The authors thank Drs H. Takakura, K. Shibata, H. Kadowaki, T. Onimaru and J. W. Lynn for stimulating discussions. This work was partly supported by a Grant-in-Aid for Encouragement of Young Scientists (B) (No. 16760537) and by a Grant-in-Aid for Creative Scientific Research (No. 16GS0417) from the Ministry of Education, Culture, Sports, Science and Technology of Japan.

Log in via your institution

Log in to Taylor & Francis Online

PDF download + Online access

  • 48 hours access to article PDF & online version
  • Article PDF can be downloaded
  • Article PDF can be printed
USD 61.00 Add to cart

Issue Purchase

  • 30 days online access to complete issue
  • Article PDFs can be downloaded
  • Article PDFs can be printed
USD 786.00 Add to cart

* Local tax will be added as applicable

Related Research

People also read lists articles that other readers of this article have read.

Recommended articles lists articles that we recommend and is powered by our AI driven recommendation engine.

Cited by lists all citing articles based on Crossref citations.
Articles with the Crossref icon will open in a new tab.