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Autor:
S. J. Joshua
Publikováno v:
physica status solidi (b). 167:K59-K62
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::09040c85eea2af75cfe22931cc6c3a54
https://doi.org/10.1002/pssb.2221670153
https://doi.org/10.1002/pssb.2221670153
Autor:
S. J. Joshua
Publikováno v:
Thinking Physics for Teaching ISBN: 9781461357865
How far should Physics education in universities go in meeting industry’s needs and at the same time remaining a “true university”?
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17dc89b41183d6ea9a6c7f7f3594c0f0
https://doi.org/10.1007/978-1-4615-1921-8_34
https://doi.org/10.1007/978-1-4615-1921-8_34
Autor:
S. J. Joshua, E. Mzunzu
Publikováno v:
Physica Scripta. :167
Physics departments in many universities especially within the Commonwealth, still look to Britain for substantial academic advice and validation. However, the venerable pattern of the "Oxbridge" model has not been an outstanding success in developin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ac7ceef96ef46d13037a9c58e0d6ecb6
https://doi.org/10.1238/physica.topical.097a00167
https://doi.org/10.1238/physica.topical.097a00167
Autor:
S. Deonarine, S. J. Joshua
Publikováno v:
physica status solidi (b). 74:659-665
Using well established group theoretical methods a symmetry analysis is made of magaons and paramagnetic spin waves in antiferromagnetic K2NiF4. Excitons and single ion transitions are also considered and Selection rules for first-order transitions a
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b8eeee381eb0aeded98ee929a07d7d00
https://doi.org/10.1002/pssb.2220740226
https://doi.org/10.1002/pssb.2220740226
Autor:
S. J. Joshua
Publikováno v:
Acta Crystallographica Section A. 30:353-358
Using the theory of representation analysis [Bertaut, E. F. (1968). Acta Cryst. A24, 217-231] and with the aid of some newly introduced symmetry symbols we present the stereographic projections for all the magnetic symmetry groups. These groups are u
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::391d5b2d32f7cad598661107d3cd3351
https://doi.org/10.1107/s0567739474000817
https://doi.org/10.1107/s0567739474000817
Autor:
S. J. Joshua, F. D. Morgan
Publikováno v:
Physica Status Solidi (b). 58:803-808
Earlier investigations of several workers on the symmetry properties and dispersion relations of antiferromagnetic NiO and CoO are extended. Using standard group theoretical methods, crystal field splittings, symmetry properties of excitons, possible
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4a272cc8d6c6bd8558f3916a286a8600
https://doi.org/10.1002/pssb.2220580243
https://doi.org/10.1002/pssb.2220580243
Autor:
S. J. Joshua
Publikováno v:
physica status solidi (b). 38:643-648
New experimental data [12] have indicated that CuCl2 · 2H2O may be a four sublattice canted antiferromagnet in accordance with Moriya's predictions [17]. However, the data obtained are too few and too weak to confirm Moriya's model. We show by using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6f3fb6bb6d980c564c2b31ced1660d95
https://doi.org/10.1002/pssb.19700380215
https://doi.org/10.1002/pssb.19700380215
Autor:
S. Deonarine, S. J. Joshua
Publikováno v:
Physica Status Solidi (b). 57:767-772
The effects of magnetic field on the spin wave spectra, magnon density of states, and the magnon contribution to the specific heat have been calculated for the antiferromagnet NiF2. The results show that the Davydov splitting of the k= 0 magnons decr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fe73cf7e2aad6c40147ba59e9836b4ec
https://doi.org/10.1002/pssb.2220570235
https://doi.org/10.1002/pssb.2220570235
Autor:
S. J. Joshua, A. P. Cracknell
Publikováno v:
physica status solidi (b). 36:737-745
We have used the recently measured spin-wave dispersion relations of antiferromagnetic UO2 to calculate the spin-wave contribution to the specific heat of this material as a function of temperature below 20 °K. The symmetries of the spin-wave disper
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1fe73f3c5fcc1be97b37c71e3c3eecbc
https://doi.org/10.1002/pssb.19690360237
https://doi.org/10.1002/pssb.19690360237