TY - JOUR

T1 - Магнитные свойства легированного железом фторидобората LiBa12(BO3)7F4 (LBBF)

AU - Коротаев, Евгений Владимирович

AU - Беккер, Татьяна Борисовна

AU - Давыдов, Алексей Владимирович

AU - Мирошниченко, Леонид Валерьевич

AU - Федоренко, А. Д.

N1 - Магнитные свойства легированного железом фторидобората LiBa12(BO3)7F4 (LBBF) / Е. В. Коротаев, Т. Б. Беккер, А. В. Давыдов [и др.] // Журнал структурной химии. – 2025. – Т. 66, № 8. – С. 150779. – DOI 10.26902/JSC_id150779. – EDN VABTXW. Исследование выполнено при поддержке гранта Российского научного фонда № 24-19-00252 (https://www.rscf.ru/project/24-19-00252/).

PY - 2025

Y1 - 2025

N2 - Magnetic properties of iron-doped LBBF samples are quite complex. Along with the paramagnetic component, magnetic susceptibility contains also the ferromagnetic contribution. The ratio of these components depends nonlinearly on the concentration of introduced iron, and so also do the effective magnetic moment of the iron ion and the Weiss constant that are determined by analysing the paramagnetic component of magnetic susceptibility. Changes in the magnetic properties of the studied compounds are accompanied by changes in the structure of 2 p lines of X-ray photoelectron spectra of iron, whereas lines of other elements maintain their structure and energy positions. The main reasons of changes in magnetic properties with increasing iron concentration include changes in the space group in which the compounds crystallize, changes in the oxidation state of iron from 3+ to 2+, formation of superparamagnetic clusters, and isolation of an impurity phase for iron concentrations higher than 0.3 wt.%. Compounds with iron concentrations below 0.3 wt.%, crystallizing in the Pbam space group, exhibit more interesting properties. They are characterized by a larger ferromagnetic contribution and a larger effective magnetic moment of the paramagnetic center compared with the samples containing from 0.3 wt.% to 1 wt.% of iron and crystallizing in the P 42 bc space group, similarly to the initial LBBF.

AB - Magnetic properties of iron-doped LBBF samples are quite complex. Along with the paramagnetic component, magnetic susceptibility contains also the ferromagnetic contribution. The ratio of these components depends nonlinearly on the concentration of introduced iron, and so also do the effective magnetic moment of the iron ion and the Weiss constant that are determined by analysing the paramagnetic component of magnetic susceptibility. Changes in the magnetic properties of the studied compounds are accompanied by changes in the structure of 2 p lines of X-ray photoelectron spectra of iron, whereas lines of other elements maintain their structure and energy positions. The main reasons of changes in magnetic properties with increasing iron concentration include changes in the space group in which the compounds crystallize, changes in the oxidation state of iron from 3+ to 2+, formation of superparamagnetic clusters, and isolation of an impurity phase for iron concentrations higher than 0.3 wt.%. Compounds with iron concentrations below 0.3 wt.%, crystallizing in the Pbam space group, exhibit more interesting properties. They are characterized by a larger ferromagnetic contribution and a larger effective magnetic moment of the paramagnetic center compared with the samples containing from 0.3 wt.% to 1 wt.% of iron and crystallizing in the P 42 bc space group, similarly to the initial LBBF.

KW - ФТОРИДОБОРАТ LIBA12(BO3)7F4

KW - ИОНЫ FE

KW - МЕТОД ФАРАДЕЯ

KW - УДЕЛЬНАЯ МАГНИТНАЯ ВОСПРИИМЧИВОСТЬ

KW - СТАТИЧЕСКАЯ МАГНЕТОХИМИЯ

KW - РФЭС

KW - LIBA12(BO3)7F4 FLUOROBORATE

KW - FE IONS

KW - FARADAY METHOD

KW - SPECIFIC MAGNETIC SUSCEPTIBILITY

KW - STATIC MAGNETOCHEMISTRY

KW - XPS

UR - https://elibrary.ru/item.asp?id=82786952

UR - https://jsc.niic.nsc.ru/article/150779/

U2 - 10.26902/JSC_id150779

DO - 10.26902/JSC_id150779

M3 - статья

VL - 66

JO - Журнал структурной химии

JF - Журнал структурной химии

SN - 0136-7463

IS - 8

M1 - 150779

ER -