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

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.

SUBMITTER: Jakobsen VB

PROVIDER: S-EPMC7496919 | biostudies-literature | 2020 Aug

REPOSITORIES: biostudies-literature

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

Jakobsen Vibe B VB Trzop Elzbieta E Gavin Laurence C LC Dobbelaar Emiel E Chikara Shalinee S Ding Xiaxin X Esien Kane K Müller-Bunz Helge H Felton Solveig S Zapf Vivien S VS Collet Eric E Carpenter Michael A MA Morgan Grace G GG

Angewandte Chemie (International ed. in English) 20200608 32

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→P ...[more]

PMID: 32358911

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