Magnetic Properties of Magnetic Nanoparticles for Efficient Hyperthermia

Nanomaterials

Ihab M. Obaidat¹  Bashar Issa¹  Yousef Haik² 

[1] Department of Physics, United Arab Emirates University, Al-Ain 15551, United Arab Emirates; E-Mail:;Department of Mechanical Engineering, United Arab Emirates University, Al-Ain 15555, United Arab Emirates; E-Mail:

关键词: magnetic nanoparticles (MNPs);    hyperthermia;    power dissipation;    curie temperature;    anisotropy;   

DOI  :  10.3390/nano5010063

来源: mdpi

【 摘 要 】

Localized magnetic hyperthermia using magnetic nanoparticles (MNPs) under the application of small magnetic fields is a promising tool for treating small or deep-seated tumors. For this method to be applicable, the amount of MNPs used should be minimized. Hence, it is essential to enhance the power dissipation or heating efficiency of MNPs. Several factors influence the heating efficiency of MNPs, such as the amplitude and frequency of the applied magnetic field and the structural and magnetic properties of MNPs. We discuss some of the physics principles for effective heating of MNPs focusing on the role of surface anisotropy, interface exchange anisotropy and dipolar interactions. Basic magnetic properties of MNPs such as their superparamagnetic behavior, are briefly reviewed. The influence of temperature on anisotropy and magnetization of MNPs is discussed. Recent development in self-regulated hyperthermia is briefly discussed. Some physical and practical limitations of using MNPs in magnetic hyperthermia are also briefly discussed.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.