La1-xSrxMnO3 Nanoparticles for Magnetic Hyperthermia

被引：9

作者：

Apostolov, Angel T. ^{[1
]}

Apostolova, Iliana N. ^{[2
]}

Wesselinowa, Julia M. ^{[3
]}

机构：

[1] Univ Architecture Civil Engn & Geodesy, Dept Phys, Fac Hydrotech, Hr Smirnenski Blvd 1, Sofia 1046, Bulgaria

[2] Univ Forestry, Fac Forest Ind, Kl Ohridsky Blvd 10, Sofia 1756, Bulgaria

[3] Univ Sofia, Dept Phys, J Bouchier Blvd 5, Sofia 1164, Bulgaria

来源：

PHYSICA STATUS SOLIDI B-BASIC SOLID STATE PHYSICS | 2018年 / 255卷 / 06期

关键词：

Green's function; magnetic hyperthermia; magnetic nanoparticles; GIANT MAGNETORESISTANCE; PEROVSKITE NANOPARTICLES; LSMO NANOPARTICLES; SIZE; MEDIATORS; TRANSPORT; FIELD;

D O I：

10.1002/pssb.201700587

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Using a modified Heisenberg model and a Green's function technique we have studied the influence of size d and concentration x of Sr dopants on the Curie temperature T-C, saturation magnetization M-S, coercivity H-C and specific absorption rate (SAR) of single-domain La1-xSrxMnO3 nanoparticles. Their magnetic properties are explained based on the magnetically death surface layer and the competition between the ferromagnetic double-exchange and antiferromagnetic super-exchange interaction. We calculated the specific absorption rate which characterizes the efficiency of the absorption energy when the magnetic hyperthermia is applied as a therapeutic method for the treatment of tumors. A set of nanoparticles appropriate for in vivo and in vitro medical applications, such as magnetic hyperthermia and drug delivery to cancer cells, is determined. The established methodology and microscopic model are suitable to study the magnetic properties of low-dimensional systems (thin films and nanoparticles) such as La(1-x)A(x)MnO(3) with A=Ca, Ag, Ba, Na for medical applications.

引用

页数：15

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