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Title: Stress‐Induced Domain Wall Motion in a Ferroelastic Mn 3+ Spin Crossover Complex

Journal Article · · Angewandte Chemie
ORCiD logo [1]; ORCiD logo [2];  [1]; ORCiD logo [3]; ORCiD logo [4]; ORCiD logo [5];  [6];  [1]; ORCiD logo [6]; ORCiD logo [7]; ORCiD logo [2]; ORCiD logo [8]; ORCiD logo [1]
  1. School of Chemistry University College Dublin Belfield Dublin 4 Ireland
  2. Univ Rennes CNRS, IPR (Institut de Physique de Rennes)—UMR 6251 35000 Rennes France
  3. School of Chemistry University College Dublin Belfield Dublin 4 Ireland, Current address: Technische Universität Kaiserslautern Kaiserslautern Germany
  4. Department of Physics Auburn University Auburn AL 36849 USA, Current address: National High Magnetic Field Lab at Florida State University Tallahassee FL USA
  5. National High Magnetic Field Laboratory Los Alamos National Laboratory Los Alamos NM 87545 USA, Current address: Idaho National Laboratory Idaho Falls ID USA
  6. Centre for Nanostructured Media School of Mathematics and Physics Queen's University of Belfast Belfast BT7 1NN, Northern Ireland UK
  7. National High Magnetic Field Laboratory Los Alamos National Laboratory Los Alamos NM 87545 USA
  8. Department of Earth Sciences University of Cambridge Downing Street Cambridge CB2 3EQ UK

Abstract Domain wall motion is detected for the first time during the transition to a ferroelastic and spin state ordered phase of a spin crossover complex. Single‐crystal X‐ray diffraction and resonant ultrasound spectroscopy (RUS) revealed two distinct symmetry‐breaking phase transitions in the mononuclear Mn 3+ compound [Mn(3,5‐diBr‐sal 2 (323))]BPh 4 , 1. The first at 250 K, involves the space group change Cc → Pc and is thermodynamically continuous, while the second, Pc → P 1 at 85 K, is discontinuous and related to spin crossover and spin state ordering. Stress‐induced domain wall mobility was interpreted on the basis of a steep increase in acoustic loss immediately below the the Pc ‐ P 1 transition

Sponsoring Organization:
USDOE
Grant/Contract Number:
SC0019330
OSTI ID:
1632251
Journal Information:
Angewandte Chemie, Journal Name: Angewandte Chemie Journal Issue: 32 Vol. 132; ISSN 0044-8249
Publisher:
Wiley Blackwell (John Wiley & Sons)Copyright Statement
Country of Publication:
Germany
Language:
English

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