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Ferroelectrics Volume 124, 1991 - Issue 1
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Section 3: Phases transitions (including incommensurate and ferroelastic)

R25 and M3 soft mode competition near the structural phase transition in KCaF3

C. Ridou Laboratoire PEC, URA n[ddot] 807 Fac. Sciences, 72017, LE MANS, FRANCE
,
M. Rousseau Laboratoire PEC, URA n[ddot] 807 Fac. Sciences, 72017, LE MANS, FRANCE
,
P. Daniel Laboratoire PEC, URA n[ddot] 807 Fac. Sciences, 72017, LE MANS, FRANCE
,
J. Nouet Laboratoire PEC, URA n[ddot] 807 Fac. Sciences, 72017, LE MANS, FRANCE
&
B. Hennion Laboratoire Léon Brillouin CEA, CNRS 91191 GIF/YVETTE, FRANCE
Pages 293-296 | Published online: 10 Feb 2011
 
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Abstract

We report some preliminary inelastic neutron scattering experiments performed in the vicinity of the structural phase transitions in KCaF3. The analysis of the data displays the occurence of a central peak all along the R-M line of the cubic Brillouin zone.

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