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【期刊论文】Magnetic Effect in Ca V Sn: YIG Induced by Energetic Heavy Ions
夏元复, Yuaniu Hsia*, Hongqi Xiong**, Abdelilah Musa All*** and Jintong Zhang
Defect and Diffusion Forum Falsd 206-207 (2002) pp. 112-122,-0001,():
-1年11月30日
The use of Gev heavy ion beam irradiation has auracted much attention in the field of material science. In the case of garnets, the superexchange inreraction among the maguetie cations in the materials is very sensitive to the electronic stopping power of the beam. The induced microstructure and magnetic propertics of irradiated Ca V Sn: YIG samples have been characterized by means of Mossbauer spectroscopy, high resohution electron microscopy (HREM), X-ray diffraction (XRD), positron annihilation techniques (PAT), vibrating sample magnetometry and ferrimagnetic resonance (FMR). The experimental results are discussed in this paper.
Imadiaton Effect, Yttriumtron Garret
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夏元复, Rongchuan Liu, Huaixian Lu, Lianwei Wang and Yuanfu Hsia
Nuclear Instrumenlts and Methods in Physics Research B76 (1993) 140-142,-0001,():
-1年11月30日
In this Paper the superparamagnetism of the oxidzed surface layer of fine iron paricles is reported. Fine iron particles in the range of size from 15 to 50nm with oxidized surface ayer were prepared by evaporation in nitrogen atmosphere. The sizes were measured by the BET method and transmission electron microscope (TEM). X-ray and electron diffraction analysis show that the particle is coposed of α-Fe core and a sufrface layer of Fe3O4. The thickness of the outer oxidized layer is about 2nm and is independent of the average diameter of the particles. The results indicate that the transition of the domain structure plays an important role in the superparamagnetic behavior of the oxide surface layer of iron particles. The emergence of the superparamag-netism at low temperature, may be a diagnostic of the transttion from the smgle domain to multi-domain structre for inner core. The criticle size of the single domain domain is esatimated at-about 40nm.
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【期刊论文】Local-realism violations in two-particle interferometry
夏元复, Xiao-hua Wu, , *, Rui-hua Xie, Xiao-dong Huang, and Yuan-fu Hsia
,-0001,():
-1年11月30日
Using a quantum-optical setting, we demonstrate local-realism violation for a maximally entangled state of two particles without using inequalities. Our proof can be generalized to all arbitrary entangled states for two particles.
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夏元复, YUANFU HSIA and HONGBO HUANG
Hyperfine Interactions 150: 33-50, 2003,-0001,():
-1年11月30日
The M
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