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Understanding the Dependence of Nanoparticles Magnetothermal Properties on Their Size for Hyperthermia Applications: A Case Study for La-Sr Manganitesстатья
Статья опубликована в высокорейтинговом журнале
Информация о цитировании статьи получена из
Web of Science,
Scopus
Статья опубликована в журнале из списка Web of Science и/или Scopus
Дата последнего поиска статьи во внешних источниках: 17 августа 2021 г.
- Авторы: Ferreira Mylla C., Pimentel Bruno, Andrade Vivian, Zverev Vladimir, Gimaev Radel R., Pomorov Andrei S., Pyatakov Alexander, Alekhina Yulia, Komlev Aleksei, Makarova Liudmila, Perov Nikolai, Reis Mario S.
- Журнал: Nanomaterials
- Том: 11
- Номер: 7
- Год издания: 2021
- Издательство: MDPI
- Местоположение издательства: Basel, Switzerland
- Номер статьи: 1826
- DOI: 10.3390/nano11071826
- Аннотация: Magnetic oxides are promising materials for alternative health diagnoses and treatments. The aim of this work is to understand the dependence of the heating power with the nanoparticle (NP) mean size, for the manganite composition La0.75Sr0.25MnO3 (LSMO)—the one with maximum critical temperature for the whole La/Sr ratio of the series. We have prepared four different samples, each one annealed at different temperatures, in order to produce different mean NP sizes, ranging from 26 nm up to 106 nm. Magnetization measurements revealed a FC-ZFC irreversibility and from the coercive field as function of temperature we determined the blocking temperature. A phase diagram was delivered as a function of the NP mean size and, based on this, the heating mechanism understood. Small NPs (26 nm) is heated up within the paramagnetic range of temperature (T>Tc), and therefore provide low heating efficiency; while bigger NPs are heated up, from room temperature, within the magnetically blocked range of temperature (T<TB), and also provide a small heating efficiency. The main finding of this article is related with the heating process for NPs within the magnetically unblocked range of temperature (Tc>T>TB), for intermediate mean diameter size of 37 nm, with maximum efficiency of heat transfer.
- Добавил в систему: Комлев Алексей Степанович
Прикрепленные файлы
| № | Имя | Описание | Имя файла | Размер | Добавлен |
|---|---|---|---|---|---|
| 1. | Полный текст | nanomaterials-11-01826.pdf | 2,9 МБ | 15 июля 2021 [AlKomlev] |