Nonlinear magneto-optical effects and photomagnetism of electrochemically synthesized molecule-based magnets

Abstract

This article describes novel optical functionalities such as photomagnetic effects and magnetization-induced second harmonic generation (MSHG) in several cyano-bridged metal assemblies. Single crystal- and film-types of a cyano-bridged Cu–Mo bimetallic assembly, % MathType!Translator!2!1!AMS LaTeX.tdl!TeX -- AMS-LaTeX! % MathType!MTEF!2!1!+- % feaaeaart1ev0aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX % garmWu51MyVXgatuuDJXwAK1uy0HwmaeHbfv3ySLgzG0uy0Hgip5wz % aebbnrfifHhDYfgasaacH8qrps0lbbf9q8WrFfeuY-Hhbbf9v8qqaq % Fr0xc9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qq % Q8frFve9Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeWaeaaakeaaca % qGdbGaae4CamaaDaaaleaacaqGYaaabaGaaeysaaaakiaaboeacaqG % 1bWaa0baaSqaaiaabEdaaeaacaqGjbGaaeysaaaakmaadmaabaGaae % ytaiaab+gadaahaaWcbeqaaiaabMeacaqGwbaaaOWaaeWaaeaacaqG % dbGaaeOtaaGaayjkaiaawMcaamaaBaaaleaacaqG4aaabeaaaOGaay % 5waiaaw2faamaaBaaaleaacaqG0aaabeaakiabgwSixlaabAdacaqG % ibWaaSbaaSqaaiaabkdaaeqaaOGaae4taaaa!4F64! $$ {\text{Cs}}^{{\text{I}}}_{{\text{2}}} {\text{Cu}}^{{{\text{II}}}}_{{\text{7}}} {\left[ {{\text{Mo}}^{{{\text{IV}}}} {\left( {{\text{CN}}} \right)}_{{\text{8}}} } \right]}_{{\text{4}}} \cdot {\text{6H}}_{{\text{2}}} {\text{O}} $$ , were electrochemically prepared. When this compound was irradiated with light, spontaneous magnetization with a Curie temperature (T C) of 23 K was observed. Electrochemically prepared FeII[CrIII(CN)6]2/3·5H2O thin film, which was a ferromagnet with T C=21 K, showed photoreduced magnetization. This photomagnetism is due to the change of ferromagnetic coupling between FeII and CrIII. MSHG was observed in CsICoII[CrIII(CN)6]·0.5H2O. This % MathType!Translator!2!1!AMS LaTeX.tdl!TeX -- AMS-LaTeX! % MathType!MTEF!2!1!+- % feaaeaart1ev0aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX % garmWu51MyVXgatuuDJXwAK1uy0HwmaeHbfv3ySLgzG0uy0Hgip5wz % aebbnrfifHhDYfgasaacH8qrps0lbbf9q8WrFfeuY-Hhbbf9v8qqaq % Fr0xc9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qq % Q8frFve9Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeWaeaaakeaaju % gqbiaadAeaceqG0aGbaebacaqGZaGaamyBaaaa!3B81! $$ F{\text{\ifmmode\expandafter\bar\else\expandafter\=\fi{4}3}}m $$ -type Prussian blue analog-based magnet is proven to be a piezoelectric ferromagnet, i.e., condensed matter with both piezoelectric and ferromagnetism. This MSHG is due to the coupling between a piezoelectric structure of % MathType!Translator!2!1!AMS LaTeX.tdl!TeX -- AMS-LaTeX! % MathType!MTEF!2!1!+- % feaaeaart1ev0aaatCvAUfeBSjuyZL2yd9gzLbvyNv2CaerbbjxAHX % garmWu51MyVXgatuuDJXwAK1uy0HwmaeHbfv3ySLgzG0uy0Hgip5wz % aebbnrfifHhDYfgasaacH8qrps0lbbf9q8WrFfeuY-Hhbbf9v8qqaq % Fr0xc9pk0xbba9q8WqFfea0-yr0RYxir-Jbba9q8aq0-yq-He9q8qq % Q8frFve9Fve9Ff0dmeaabaqaciGacaGaaeqabaWaaeWaeaaakeaaju % gqbiaadAeaceqG0aGbaebacaqGZaGaamyBaaaa!3B81! $$ F{\text{\ifmmode\expandafter\bar\else\expandafter\=\fi{4}3}}m $$ and ferromagnetism with a T C of 46 K.