摘要:

Mutual phase locking of Josephson junctions in a multijunction superconducting loop (MSL) was investigated both theoretically and experimentally. The theoretical analysis predicts the existence of phase‐locked states, where the circulating current in the loop serves for phase locking between junctions. The basic operating principles of a MSL were studied experimentally using high‐TCbicrystal Josephson junctions. The enhancement of phase locking stability with respect to series arrays is reported. ©1995 American Institute of Physics.

ISSN:0003-6951    

DOI:10.1063/1.114958

出版商:AIP    

年代:1995

数据来源: AIP

摘要:

The effect of Ga substitution for Fe inR2Fe17(R=Y, Sm, Gd, Tb, Dy, Ho, Er, and Tm) compounds on the structure and magnetocrystalline anisotropy has been studied by means of x‐ray diffraction and magnetization measurements. Both iron sublattice anisotropy and rare earth sublattice anisotropy are found to be modified by the introduction of the gallium atoms. A uniaxial anisotropy is shown inR2Fe17−xGax(forR=Y, Gd, Tb, Dy, Ho, Er, and Tm) compounds with high Ga concentration, whereas a reversal change in the easy magnetization direction is observed in the samples forR=Sm. The contributions to the uniaxial orientation of the magnetization in these compounds result from not only the rare earth sublattice, but also the iron sublattice. ©1995 American Institute of Physics.

ISSN:0003-6951    

DOI:10.1063/1.114959

出版商:AIP    

年代:1995

数据来源: AIP

摘要:

Amorphous aluminum oxide thin films have been produced with low pressure metal organic chemical vapor deposition technique using the aluminum tris‐dipivaloylmethanate volatile precursor. Different carrier gases were used for the depositions. The surfaces of the films were analyzed using x‐ray photoelectron spectroscopy and secondary ion mass spectrometry. A very low content of carbon was verified when oxygen and water vapor saturated argon were used as carrier gases. A higher hydration percentage of the deposited material was verified when water vapor was present during the deposition process. ©1995 American Institute of Physics.

ISSN:0003-6951    

DOI:10.1063/1.114960

出版商:AIP    

年代:1995

数据来源: AIP

摘要:

Synthesis of fullerenes using a standard dc arc evaporation of composite graphite anode containing 0–100 wt % of diamond is reported. The benzene soluble material‐to‐soot weight ratioWincreases linearly with increasing diamond compositionCDup to 45 wt %. At 50 wt %,Wis 1.86 times as large as that for pure graphite. Above 50 wt %,Wturns to decrease linearly. It is shown that diamond and graphite contribute independently toW. The graphite contribution to the linear behaviors is discussed in terms of kinetics of the transformation from planarsp2network to quasitetragonalsp3hybridization through quasiplanarsp2hybridization during the dc arc. Furthermore, a new type of encapsulation compound, single crystals of diamond encapsulated in multiwalled carbon nanocages, is presented. ©1995 American Institute of Physics.

ISSN:0003-6951    

DOI:10.1063/1.115020

出版商:AIP    

年代:1995

数据来源: AIP

ISSN:0003-6951    

DOI:10.1063/1.115552

出版商:AIP    

年代:1995

数据来源: AIP