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Physical Sciences and Mathematics

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Selected Works

1990

Articles 1 - 12 of 12

Full-Text Articles in Engineering

73. Professor Cristofor I. Simionescu On His 70th Birthday, Otto Vogl, Ioan I. Negulescu Dec 1990

73. Professor Cristofor I. Simionescu On His 70th Birthday, Otto Vogl, Ioan I. Negulescu

Otto Vogl

No abstract provided.

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Organic And Polymeric Nonlinear Optical Materials, Otto Vogl, Donald R. Ulrich Dec 1990

Organic And Polymeric Nonlinear Optical Materials, Otto Vogl, Donald R. Ulrich

Otto Vogl

No abstract provided.

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Polymer Science In Hungary, Part Iii. The Industrial Research Institutes And Their Factories, Otto Vogl, Gyula Hardy, Sandor Doubravsky, Margit Iring, Ferenc Tudos Dec 1990

Polymer Science In Hungary, Part Iii. The Industrial Research Institutes And Their Factories, Otto Vogl, Gyula Hardy, Sandor Doubravsky, Margit Iring, Ferenc Tudos

Otto Vogl

No abstract provided.

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9th International Symposium On Cationic Polymerization And Related Ionic Processes, Otto Vogl Nov 1990

9th International Symposium On Cationic Polymerization And Related Ionic Processes, Otto Vogl

Otto Vogl

No abstract provided.

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Polymer Science In Hungary, Part Ii. The Universities In Hungary, Otto Vogl, Jozef Varga, Margit Iring, Ferenc Tudos Nov 1990

Polymer Science In Hungary, Part Ii. The Universities In Hungary, Otto Vogl, Jozef Varga, Margit Iring, Ferenc Tudos

Otto Vogl

No abstract provided.

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74. Professor Cristofor I. Simionescu On His 70th Birthday, Otto Vogl, Ioan I. Negulescu Nov 1990

74. Professor Cristofor I. Simionescu On His 70th Birthday, Otto Vogl, Ioan I. Negulescu

Otto Vogl

No abstract provided.

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Polymer Science In Hungary. Part I. The Institutes Of The Hungarian Academy Of Sciences, Otto Vogl, Ferenc Tudos, Margit Iring Oct 1990

Polymer Science In Hungary. Part I. The Institutes Of The Hungarian Academy Of Sciences, Otto Vogl, Ferenc Tudos, Margit Iring

Otto Vogl

No abstract provided.

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First Pacific Polymer Conference, Jane C. Vogl, Gerald Kirshenbaum Oct 1990

First Pacific Polymer Conference, Jane C. Vogl, Gerald Kirshenbaum

Otto Vogl

No abstract provided.

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Theory Of Compositional And Magnetic Correlations In Alloys: Interpretation Of A Diffuse Neutron-Scattering Experiment On An Iron-Vanadium Single Crystal, J. B. Staunton, Duane D. Johnson, F. J. Pinski Sep 1990

Theory Of Compositional And Magnetic Correlations In Alloys: Interpretation Of A Diffuse Neutron-Scattering Experiment On An Iron-Vanadium Single Crystal, J. B. Staunton, Duane D. Johnson, F. J. Pinski

Duane D. Johnson

We describe a first-principles theory for compositional and magnetic correlations in alloys and compare the results of the theory with recent diffuse, unpolarized, neutron-scattering measurements on a single crystal of ferromagnetic Fe0.865V0.135. The nuclear cross section is described very well by the theory and we are able to connect the q-dependent structure to the underlying electronic structure of the alloy. The magnetocompositional and magnetic correlations also may be obtained for comparison to polarized measurements.

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Second Euro-American Conference In Oxford On “Functional Polymers And Biopolymers”, Otto Vogl, Jane C. Vogl Sep 1990

Second Euro-American Conference In Oxford On “Functional Polymers And Biopolymers”, Otto Vogl, Jane C. Vogl

Otto Vogl

No abstract provided.

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Total-Energy And Pressure Calculations For Random Substitutional Alloys, Duane D. Johnson, D. M. Nicholson, F. J. Pinski, B. L. Györffy, G. M. Stocks May 1990

Total-Energy And Pressure Calculations For Random Substitutional Alloys, Duane D. Johnson, D. M. Nicholson, F. J. Pinski, B. L. Györffy, G. M. Stocks

Duane D. Johnson

We present the details and the derivation of density-functional-based expressions for the total energy and pressure for random substitutional alloys (RSA) using the Korringa-Kohn-Rostoker Green’s-function approach in combination with the coherent-potential approximation (CPA) to treat the configurational averaging. This includes algebraic cancellation of various electronic core contributions to the total energy and pressure, as in ordered-solid muffin-tin-potential calculations. Thus, within the CPA, total-energy and pressure calculations for RSA have the same foundation and have been found to have the same accuracy as those obtained in similar calculations for ordered solids. Results of our calculations for the impurity formation energy, and …

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Coincidence Orientations Of Crystals In Tetragonal Systems, With Applications To Yba2cu3o7, Abha Singh, N. Chandrasekhar, Alexander H. King Jan 1990

Coincidence Orientations Of Crystals In Tetragonal Systems, With Applications To Yba2cu3o7, Abha Singh, N. Chandrasekhar, Alexander H. King

Alexander H. King

We have developed a method for the characterization of coincidence-site lattices (CSL's) in tetragonal or near-tetragonal orthorhombic structures, by suitable modifications to the method of Grimmer & Warrington [Acta Cryst. (1987), A43, 232-243]. We have applied our method to determine coincidence rotations and the associated information appropriate for forming constrained CSL's in the high-To superconductor YBazCu307-n. The unit cell is orthorhombic with lattice parameters a = 3.82, b = 3"89 and c = 11.67 A for the nominal composition. We present tables of coincidence rotation angles, .Z, CSL, DSCL and associated step vectors up to ,~ = 50. We find …

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