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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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