Influence of the interaction of polymeric chains on thermal transitions of Jahn—Teller exchange clusters in compounds of "breathing" crystal family

Standard

Influence of the interaction of polymeric chains on thermal transitions of Jahn—Teller exchange clusters in compounds of "breathing" crystal family. / Morozov, V. A.; Sagdeev, R. Z.

In: Russian Chemical Bulletin, Vol. 66, No. 2, 01.02.2017, p. 201-207.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{59bf4cdbc7594a96b14c42fd9c15fa48,

title = "Influence of the interaction of polymeric chains on thermal transitions of Jahn—Teller exchange clusters in compounds of {"}breathing{"} crystal family",

abstract = "Based on the method of random field distribution functions in Ising magnets, for the first time a theoretical description of thermal transitions in Jahn—Teller exchange clusters is suggested, which takes into account the interactions of polymeric chains in {"}breathing{"} crystal compounds. It was shown that the inclusion of this interaction can lead to both an intensification of spin-crossover type cooperative transitions in exchange clusters and their deceleration. The approach in question is generalized to include non-Jahn—Teller metal impurities in {"}breathing{"} crystals, which suppress cooperative effects in thermal transitions of Jahn—Teller exchange clusters. The obtained results qualitatively reproduce the temperature dependencies of magnetic properties of solid solutions Cu1—xNix(hfac)2LR (hfac is hexafluoroacetylacetonate anion, ligand LR is nitronyl nitroxide radical with pyrazole substituent at the second position of the imidazoline ring) when R = Et.",

keywords = "effective magnetic moment, exchange cluster, molecular magnetics, spin-crossover",

author = "Morozov, {V. A.} and Sagdeev, {R. Z.}",

year = "2017",

month = feb,

day = "1",

doi = "10.1007/s11172-017-1720-0",

language = "English",

volume = "66",

pages = "201--207",

journal = "Russian Chemical Bulletin",

issn = "1066-5285",

publisher = "Springer Nature",

number = "2",

}

RIS

TY - JOUR

T1 - Influence of the interaction of polymeric chains on thermal transitions of Jahn—Teller exchange clusters in compounds of "breathing" crystal family

AU - Morozov, V. A.

AU - Sagdeev, R. Z.

PY - 2017/2/1

Y1 - 2017/2/1

N2 - Based on the method of random field distribution functions in Ising magnets, for the first time a theoretical description of thermal transitions in Jahn—Teller exchange clusters is suggested, which takes into account the interactions of polymeric chains in "breathing" crystal compounds. It was shown that the inclusion of this interaction can lead to both an intensification of spin-crossover type cooperative transitions in exchange clusters and their deceleration. The approach in question is generalized to include non-Jahn—Teller metal impurities in "breathing" crystals, which suppress cooperative effects in thermal transitions of Jahn—Teller exchange clusters. The obtained results qualitatively reproduce the temperature dependencies of magnetic properties of solid solutions Cu1—xNix(hfac)2LR (hfac is hexafluoroacetylacetonate anion, ligand LR is nitronyl nitroxide radical with pyrazole substituent at the second position of the imidazoline ring) when R = Et.

AB - Based on the method of random field distribution functions in Ising magnets, for the first time a theoretical description of thermal transitions in Jahn—Teller exchange clusters is suggested, which takes into account the interactions of polymeric chains in "breathing" crystal compounds. It was shown that the inclusion of this interaction can lead to both an intensification of spin-crossover type cooperative transitions in exchange clusters and their deceleration. The approach in question is generalized to include non-Jahn—Teller metal impurities in "breathing" crystals, which suppress cooperative effects in thermal transitions of Jahn—Teller exchange clusters. The obtained results qualitatively reproduce the temperature dependencies of magnetic properties of solid solutions Cu1—xNix(hfac)2LR (hfac is hexafluoroacetylacetonate anion, ligand LR is nitronyl nitroxide radical with pyrazole substituent at the second position of the imidazoline ring) when R = Et.

KW - effective magnetic moment

KW - exchange cluster

KW - molecular magnetics

KW - spin-crossover

UR - http://www.scopus.com/inward/record.url?scp=85021812099&partnerID=8YFLogxK

U2 - 10.1007/s11172-017-1720-0

DO - 10.1007/s11172-017-1720-0

M3 - Article

AN - SCOPUS:85021812099

VL - 66

SP - 201

EP - 207

JO - Russian Chemical Bulletin

JF - Russian Chemical Bulletin

SN - 1066-5285

IS - 2

ER -

ID: 10095896