|
ИСТИНА |
Войти в систему Регистрация |
ИСТИНА ПсковГУ |
||
The role of Mn in the stabilization of adiabatic temperature changes of LaFe11.2−xMnxCo0.7Si1.1 alloys in an alternating magnetic fieldстатья Исследовательская статья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 8 октября 2025 г.
- Авторы: Gamzatov A., N Abdulkadirova, K Kamilov, Batdalov Akhmed, Aliev Akhmed, Gebara Piotr, Zhang Hu
- Журнал: Rare Metals
- Том: 44
- Год издания: 2025
- Издательство: Chinese Society of Nonferrous Metal
- Местоположение издательства: China
- Первая страница: 4074
- Последняя страница: 4085
- DOI: 10.1007/s12598-025-03266-2
- Аннотация: The results of the study of the effect of partial substitution of Fe by Mn in the LaFe11.2−xMnxCo0.7Si1.1 system on magnetization, specific heat, magnetostriction and magnetocaloric effect are presented. Direct measurements of the adiabatic temperature change (∆Tad) were carried out in alternating magnetic fields (AMF) using the magnetic field modulation method. Partial substitution of Fe atoms by Mn atoms leads to a shift in the Curie temperature (TC) towards lower temperatures without a noticeable deterioration in magnetic properties. A correlation was found between the structural component of the magnetocaloric effect and the stability of the frequency of the ∆Tad in the AMFs—an increase in the manganese concentration leads to a decrease in magnetostriction and to a lower dependence of ∆Tad on the frequency of the magnetic field. Estimates of the specific cooling power QC as a function of the frequency of the AMF showed that the highest value of QC at f = 20 Hz in a magnetic field of 12 kOe is 26.3 W g−1 and is observed for the composition with x = 0.1. This value is higher than that of Gd, for which, under the same conditions, QC = 21.6 W g−1. All the samples studied show stability of the value of ΔTad without any sign of deterioration of the effect up to 60,000 cycles of switching on/off of the magnetic field of 12 kOe. The discovered frequency and cyclic stability of ΔTad of the studied samples increase their prospects for application in magnetic cooling technology.
- Добавил в систему: Камилов Камил Ибрагимханович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|