The structures of Pb(ZrxTi1-x)O3/YBCO heterostructure with different thickness of PZT sublayer were investigated.The lattice parameter,c of YBCO layer is obtained to be c=11.686±0.001A.being of 0.2% larger than t...The structures of Pb(ZrxTi1-x)O3/YBCO heterostructure with different thickness of PZT sublayer were investigated.The lattice parameter,c of YBCO layer is obtained to be c=11.686±0.001A.being of 0.2% larger than that of the bulk one.The lattice parameter,c of PZT layer is c=4.116±0.001A,indicating that the composition of the sample is Pb(Zr0.48Ti0.52)O3.The misorientations of YBCO/PZT sublayers were observed in the samples B and D.The effect of the crystalline quality of the STO substrate o the quality of the YBCO and PZT epitaxial fllms was discussed.展开更多
It is impossible to directly analyze the microstructure of spin-valve multilayers based on Ni,F,Cu and Mn by a conventional X-ray diffraction technique because the lattice parameter and atomic sattering factor sof the...It is impossible to directly analyze the microstructure of spin-valve multilayers based on Ni,F,Cu and Mn by a conventional X-ray diffraction technique because the lattice parameter and atomic sattering factor sof them are very close.To solve this problem, we use an x-ray anomalous diffraction technique to characterize the microstructures of the [Ni80Fe20/Fe50Mn50]15 and [Ni80Fe20/Cu]15 superlattice systems.The results show that more diffraction peaks and higher internsity in the reflectivety profile are observed when the incident energy is close to the absorption edge of the lighter element(Mn) in [Ni80Fe20/Fe50Mn50]15 multilayer systems and to the absorption edge of the heavier element (Cu) in the [Ni80Fe20/Cu]15 multilayer systems.The interface and periodic structure of [Ni80F20/Fe50Mn50]15 are more perfect than that of the [Ni80Fe20/Cu]15 superlattices.The above results are disussed in this paper.展开更多
文摘The structures of Pb(ZrxTi1-x)O3/YBCO heterostructure with different thickness of PZT sublayer were investigated.The lattice parameter,c of YBCO layer is obtained to be c=11.686±0.001A.being of 0.2% larger than that of the bulk one.The lattice parameter,c of PZT layer is c=4.116±0.001A,indicating that the composition of the sample is Pb(Zr0.48Ti0.52)O3.The misorientations of YBCO/PZT sublayers were observed in the samples B and D.The effect of the crystalline quality of the STO substrate o the quality of the YBCO and PZT epitaxial fllms was discussed.
文摘It is impossible to directly analyze the microstructure of spin-valve multilayers based on Ni,F,Cu and Mn by a conventional X-ray diffraction technique because the lattice parameter and atomic sattering factor sof them are very close.To solve this problem, we use an x-ray anomalous diffraction technique to characterize the microstructures of the [Ni80Fe20/Fe50Mn50]15 and [Ni80Fe20/Cu]15 superlattice systems.The results show that more diffraction peaks and higher internsity in the reflectivety profile are observed when the incident energy is close to the absorption edge of the lighter element(Mn) in [Ni80Fe20/Fe50Mn50]15 multilayer systems and to the absorption edge of the heavier element (Cu) in the [Ni80Fe20/Cu]15 multilayer systems.The interface and periodic structure of [Ni80F20/Fe50Mn50]15 are more perfect than that of the [Ni80Fe20/Cu]15 superlattices.The above results are disussed in this paper.
