toggle visibility Search & Display Options

Select All    Deselect All
 |   | 
Details
   print
  Records Links
Author Carreras Oropesa, W.G.; Correa, V.F.; Sereni, J.G.; García, D.J.; Cornaglia, P.S. url  doi
openurl 
  Title Landau theory for magnetic and structural transitions in CeCo0.85Fe0.15Si Type Journal Article
  Year 2018 Publication Journal of Physics: Condensed Matter Abbreviated Journal J. Phys.: Condens. Matter  
  Volume (up) 30 Issue Pages 295803  
  Keywords  
  Abstract We present a phenomenological analysis of the magnetoelastic properties of CeCo0.85Fe0.15Si

at temperatures close to the Néel transition temperature TN. Using a Landau functional we

provide a qualitative description of the thermal expansion, magnetostriction, magnetization

and specific heat data. We show that the available experimental results (Correa et al 2016 J.

Phys.: Condens. Matter 28 346003) are consistent with the presence of a structural transition

at Ts  TN and a strong magnetoelastic coupling. The magnetoelastic coupling presents a

Janus-faced effect: while the structural transition is shifted to higher temperatures as the

magnetic field is increased, the resulting striction at low temperatures decreases. The strong

magnetoelastic coupling and the proximity of the structural transition to the onset temperature

for magnetic fluctuations, suggest that the transition could be an analogue of the tetragonal to

orthorhombic observed in Fe-based pcnictides.
 
  Address  
  Corporate Author Thesis  
  Publisher Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ victor.correa @ Serial 796  
Permanent link to this record
 

 
Author Betancourth, D.; Correa, V.F.; García, D.J. doi  openurl
  Title Evidence of a Low Energy Anisotropy in GdCoIn_5 Type Journal Article
  Year 2015 Publication Journal of Low Temperature Physics Abbreviated Journal J. Low Temp. Phys.  
  Volume (up) 179 Issue 1-2 Pages 90-93  
  Keywords Rare earth magnetism; Antiferromagnetic transition; Anisotropy  
  Abstract We investigate the effects of an applied magnetic field on the magnetic properties of the antiferromagnet GdCoIn 5 . The prominent anisotropy observed in the susceptibility below TN is rapidly suppressed by a field of just a few Tesla. Further evidence of this low energy-scale is obtained from magnetoresistance and magnetostriction experiments. The lattice length, particularly, shows a sudden change below 2 T when the magnetic field is applied perpendicular to the crystallographic c^ -axis.  
  Address  
  Corporate Author Thesis  
  Publisher Springer US Place of Publication Editor  
  Language Summary Language Original Title  
  Series Editor Series Title Abbreviated Series Title  
  Series Volume Series Issue Edition  
  ISSN 0022-2291 ISBN Medium  
  Area Expedition Conference  
  Notes Approved no  
  Call Number BT @ pedrazp @ Serial 710  
Permanent link to this record
Select All    Deselect All
 |   | 
Details
   print

Save Citations:
Export Records: