Phase Transitions in the Brominated Ferroelectric Tris-Sarcosine Calcium Chloride

J. C. Lashley*, J. H. D. Munns, M. Echizen, M. N. Ali, S. E. Rowley, J. F. Scott

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)

Abstract

We demonstrate that the Curie temperature, T-c, of tris-sarcosine calcium chloride can be lowered from 130 K to near 0 K by chemical doping of the anion. In the low temperature limit, quantum fluctuations persist over a range of chemical doping concentrations. Below T-C the temperature dependence of the fractional length change, Delta L/L-o, scales as (Delta L/L-o )(-1) =a broken vertical bar at(lambda) (red line) where t is the reduced temperature, and lambda = -1.5. The behavior of linear coefficient of thermal expansion near T-C is shown in the inset. Three additional phase transitions near 43, 50, and 61 K are resolved.

Original languageEnglish
Pages (from-to)3860-3866
Number of pages7
JournalAdvanced Materials
Volume26
Issue number23
DOIs
Publication statusPublished - 18 Jun 2014

Keywords

  • POLARIZATION REVERSAL PROCESS
  • THERMAL-EXPANSION
  • DIELECTRIC MEASUREMENTS
  • THERMODYNAMIC RELATIONS
  • TEMPERATURE-DEPENDENCE
  • RELAXOR FERROELECTRICS
  • CRITICAL EXPONENTS
  • LAMBDA-TRANSITION
  • CRITICAL-BEHAVIOR
  • SOLID-SOLUTIONS

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