Document Detail


Direct determination of the magnetic structure of the delta phase of oxygen.
MedLine Citation:
PMID:  15323705     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Simple diatomic molecules exhibit a variety of exciting physical phenomena under high pressures, including structural transitions, pressure induced metallization, and superconductivity. Oxygen is of particular interest because it carries a magnetic moment. For the first time we studied the magnetic structure in solid oxygen under very high pressure by a direct method, namely, neutron diffraction. A new type of magnetic order with ferromagnetic stacking of the antiferromagnetic O2 planes was discovered in delta-O2 at P=6.2 GPa. We show that all structural transformations at pressures <7 GPa are driven by spin interactions; therefore, high-pressure oxygen should be considered as a unique "spin-controlled crystal."
Authors:
I N Goncharenko; O L Makarova; L Ulivi
Related Documents :
11136055 - New ortho-para conversion mechanism in dense solid hydrogen.
10948215 - Seed coat cell turgor in chickpea is independent of changes in plant and pod water pote...
10491165 - The effects of hydrostatic pressure on the conformation of plasminogen.
17980485 - Calculation of the upper flammability limit of methane/air mixtures at elevated pressur...
2384415 - Pulmonary diffusing capacities for nitric oxide and carbon monoxide determined by rebre...
17321615 - Co-ordinated intra-abdominal and intra-thoracic pressures regulate cough assisted cardi...
Publication Detail:
Type:  Journal Article     Date:  2004-07-29
Journal Detail:
Title:  Physical review letters     Volume:  93     ISSN:  0031-9007     ISO Abbreviation:  Phys. Rev. Lett.     Publication Date:  2004 Jul 
Date Detail:
Created Date:  2004-08-24     Completed Date:  2004-10-21     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0401141     Medline TA:  Phys Rev Lett     Country:  United States    
Other Details:
Languages:  eng     Pagination:  055502     Citation Subset:  -    
Affiliation:
Laboratoire Léon Brillouin C.E.A.-C.N.R.S., CEA Saclay, 91191 Gif-sur-Yvette, France.
Export Citation:
APA/MLA Format     Download EndNote     Download BibTex
MeSH Terms
Descriptor/Qualifier:

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


Previous Document:  Chain &quot;melting&quot; in the composite Rb-IV structure.
Next Document:  High density amorphous form and polyamorphic transformations of silicon.