The magnetic properties of Fe2+ ions in Fe(NH4)2(SO4)26H2O at low temperatures
作者： J C Gill , P A Ivey
DOI: 10.1088/0022-3719/7/8/018
关键词:
摘要: The published data on the specific heat and susceptibility of Fe(NH4)2(SO4)26H2O are analysed to find energies, wavefunctions magnetic axes appropriate Fe2+ ions at temperatures below 20 K. Two ambiguities solved by experiment. dependence temperature crystal is measured decide between alternative directions for ionic axes, with results which invalidate certain assumptions previous authors. problem associating a particular one two inequivalent types paramagnetic site spin-resonance study not themselves (which low show no absorption ordinary microwave frequencies), but rather Cu2+ added as an impurity in whose spectrum effects individual can be distinguished.
harvard.edu
sci-hub.se 参考文章(18)
Anatole Abragam, Electron paramagnetic resonance of transition ions ,(1970)
J M Baker, Interactions between rare earth ions in the ethyl sulphates Journal of Physics C: Solid State Physics. ,vol. 4, pp. 1631- 1643 ,(1971) , 10.1088/0022-3719/4/12/022
R. Ingalls, K. Ôno, Louis Chandler, Quadrupolar Hyperfine Anisotropy in Fe(NH 4 SO 4 ) 2 . 6H 2 O and Its Comparison with the Magnetic Susceptibility Physical Review. ,vol. 172, pp. 295- 301 ,(1968) , 10.1103/PHYSREV.172.295
J. M. Daniels, H. A. Farach, "SPIN-FLIP NARROWING" OF PARAMAGNETIC RESONANCE LINES Canadian Journal of Physics. ,vol. 38, pp. 151- 152 ,(1960) , 10.1139/P60-016
R W Hill, P L Smith, The Anomalous Specific Heat of Ferrous Ammonium Sulphate Proceedings of the Physical Society. Section A. ,vol. 66, pp. 228- 232 ,(1953) , 10.1088/0370-1298/66/3/304
Takeshi Mitsuma, OBSERVATION OF THE RADIATION ANOMALIES AT THE ALTITUDES OF 200-300 KM Journal of the Physical Society of Japan. ,vol. 17, pp. 128- 135 ,(1962) , 10.1143/JPSJ.17.128
K D Bowers, J Owen, Paramagnetic Resonance II Reports on Progress in Physics. ,vol. 18, pp. 304- 373 ,(1955) , 10.1088/0034-4885/18/1/308
H. Montgomery, E. C. Lingafelter, The crystal structure of Tutton's salts. I. Zinc ammonium sulfate hexahydrate Acta Crystallographica. ,vol. 17, pp. 1295- 1299 ,(1964) , 10.1107/S0365110X64003231
F. Mehran, K. W. H. Stevens, R. S. Title, F. Holtzberg, Exchange Interaction ofEu2+-Sm2+andMn2+-Sm2+in Samarium Chalcogenides Observed by Electron Paramagnetic Resonance Physical Review Letters. ,vol. 27, pp. 1368- 1371 ,(1971) , 10.1103/PHYSREVLETT.27.1368
H. Montgomery, B. Morosin, J. J. Natt, A. M. Witkowska, E. C. Lingafelter, The crystal structure of Tutton's salts. VI. Vanadium(II), iron(II) and cobalt(II) ammonium sulfate hexahydrates Acta Crystallographica. ,vol. 22, pp. 775- 780 ,(1967) , 10.1107/S0365110X67001550