单位：[1]Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China[2]China Japan Friendship Hosp, Inst Med Clin Sci, Beijing 100029, Peoples R China[3]Tsinghua Univ, Sch Med, Beijing 100084, Peoples R China
A series of magnetite (Fe3O4) nanoparticles with different magnetic properties were prepared with the different Fe3+/Fe2+ molar ratios by coprecipitation process, and their inductive heat properties were measured by an alternating current (AC) magnetic field (80kHz, 30kA/m) for local hyperthermia. The specific saturation magnetization Ms of Fe3O4 nanoparticles prepared by coprecipitation is 65.53 emu/g under the optimum conditions of Fe3+:Fe2+ molar ratio at 1.8:1. The Ms of Fe3O4 nanoparticles decreased with the increasing of Fe3+/Fe2+ molar ratio. But the coercivity He increased with the increasing of Fe3+/Fe2+ molar ratio. The temperatures that different kinds of Fe3O4 nanoparticles physiological saline suspensions with concentration of 20 mg/ml reached were 4297.5 degrees C in the AC magnetic field during 29 minutes. The inductive heat property of Fe3O4 nanoparticles decreased with the increasing of the coercivity He, but increased with the increasing of specific saturation magnetization Ms in AC magnetic field. The Fe3O4 nanoparticles are perfect thermoseeds for local hyperthermia treatment of cancers with the super magnetic and inductive heat property.
第一作者单位：[1]Beijing Univ Chem Technol, State Key Lab Chem Resource Engn, Beijing 100029, Peoples R China
通讯作者：
推荐引用方式(GB/T 7714)：
Zhao Dong-Lin,Zhao Hong-Ye,Zeng Xian-Wei,et al.Coercivity dependence of inductive heat property of Fe3O4 nanoparticles in alternating current magnetic field[J].ADVANCES in COMPOSITE MATERIALS and STRUCTURES, PTS 1 and 2.2007,334-335:1185-+.doi:10.4028/www.scientific.net/KEM.334-335.1185.
APA：
Zhao, Dong-Lin,Zhao, Hong-Ye,Zeng, Xian-Wei,Xia, Qi-Sheng&Tang, Jin-Tian.(2007).Coercivity dependence of inductive heat property of Fe3O4 nanoparticles in alternating current magnetic field.ADVANCES in COMPOSITE MATERIALS and STRUCTURES, PTS 1 and 2,334-335,
MLA：
Zhao, Dong-Lin,et al."Coercivity dependence of inductive heat property of Fe3O4 nanoparticles in alternating current magnetic field".ADVANCES in COMPOSITE MATERIALS and STRUCTURES, PTS 1 and 2 334-335.(2007):1185-+
