Stress-Induced Domain Wall Motion in a Ferroelastic Mn3+ Spin Crossover Complex

Vibe B. Jakobsen, Elzbieta Trzop, Laurence C. Gavin, Emiel Dobbelaar, Shalinee Chikara, Xiaxin Ding, Kane Esien, Helge Müller-Bunz, Solveig Felton, Vivien S. Zapf, Eric Collet, Michael A. Carpenter, Grace G. Morgan

Research output: Contribution to journalArticlepeer-review

55 Scopus citations

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 Mn3+ compound [Mn(3,5-diBr-sal2(323))]BPh4, 1. The first at 250 K, involves the space group change Cc→Pc and is thermodynamically continuous, while the second, Pc→P1 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-P1 transition.
Original languageEnglish
Pages (from-to)13305-13312
Number of pages8
JournalAngewandte Chemie - International Edition
Volume59
Issue number32
DOIs
StatePublished - Aug 3 2020

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