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The magnetic structure of the NiAs-type compound, CrSe, has been determined by means of neutron diffraction. The indexing of superstructure lines which appear below the N\'eel point requires a unit cell three times as large as the conventional unit ($a=\sqrt{3}{a}_{\mathrm{NiAs}}$). Planes parallel to the basal plane…
The magnetic properties of Mn 3.67 Sn, Mn 1.77 Sn, and MnSn 2 were investigated. In Mn 3.67 Sn, an anomalous magnetic phenomenon was found, which may be due to its antiferromagnetism. The Néel temperature T N , the effective number of Bohr magnetons per Mn n p , and the asymptotic Curie point θ a are 365°K, 3.58, and…
Iron vacancies in Fe 7 Se 8 are confined to the alternate iron layers parallel to the c plane of the fundamental lattice with the NiAs structure. The origin of the ferrimagnetisni of Fe 7 Se 8 ( T c =187°C) may be attributed to this ordered arrangement similarly to the case of Fe 7 Se 8 . There are two types of the su…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTTHE LANTHANUM—BORON SYSTEM1Robert W. Johnson and A. H. DaaneCite this: J. Phys. Chem. 1961, 65, 6, 909–915Publication Date (Print):June 1, 1961Publication History Published online1 May 2002Published inissue 1 June 1961https://pubs.acs.org/doi/10.1021/j100824a004https://doi.o…
ADVERTISEMENT RETURN TO ISSUEPREVArticleNEXTLower Oxidation States of the Lanthanides. Neodymium(II) Chloride and Iodide1Leonard F. Druding and John D. CorbettCite this: J. Am. Chem. Soc. 1961, 83, 11, 2462–2467Publication Date (Print):June 1, 1961Publication History Published online1 May 2002Published inissue 1 June…
The calculation of the partition function for a simple one-dimensional order-disorder model is reduced to the solution of a certain functional equation. This equation is solved rigorously and it is shown that in the limit of indefinitely long-range interactions the model exhibits a finite discontinuity in the specific…
The self-diffusion of alkali ions in alkali silicate glasses is discussed in terms of the formation, migration, and ultimate annihilation of defects. These defects exhibit a combination of the properties exhibited by Frenkel defects in alkali halides and Bjerrum defects in ice, and are treatable by many of the analyti…
The ratio of the flow stress at a high temperature to that at O°C has been measured for polycrystalline Al and Cu, and for single crystals of Al. In Al the flow stress decreases ratio strongly with temperature above a certain critica1 temperature (about 250°C). In Cu a similar but more gradual decrease in the flow str…
A study has been made of the internal fields acting on ${\mathrm{Fe}}^{57}$ nuclei in some spinel ferrites, with particular reference to the low-temperature order-disorder transition in magnetite, using the techniques of M\"ossbauer absorption. For the ${\mathrm{Fe}}^{3+}$ ions at both the octahedral and tetrahedral s…
The Stark splitting of the identified levels of Nd+3 in LaCl3 were calculated by first-order perturbation. Intermediate coupling wave functions and crystal-field interaction parameters reported by Judd were used. The calculated spectrum agrees with the spectrum observed by Carlson to 5 cm—1.
The characteristic equation determining the eigenfrequencies of the magnetostatic modes is derived from the equations of motion and the boundary conditions. The solutions may be classified as pertaining to surface and to volume modes. Surface-mode solutions exist only for sufficiently small wave numbers, and their eig…
MIXED OXIDES OF TITANIUM AND NIOBIUM. I distances 1. 95 and 2.76 A between metal and anion, anion and anion respectively in Nb02F; Vousden (1951) 2.00 and 2.82 A for KNbOs, 1.95 and 2-76/~ for NaNb0s; BystrSm's (1944) data for the pyrochlor structure, based upon indirect methods, is not included.
The effect of pressure from 60 to over 400 kbar has been measured on the resistance of selenium and iodine. Selenium exhibits a very rapid drop in resistance between 60 and 128 kbar; at 128 kbar it shows a discontinuous drop. At higher pressures its behavior is apparently metallic. Iodine shows a rapid drop in resista…
The thermal conductivity of single crystals of Ca${\mathrm{F}}_{2}$, Mn${\mathrm{F}}_{2}$, Co${\mathrm{F}}_{2}$, and Zn${\mathrm{F}}_{2}$ has been measured over the temperature range from 3\ifmmode^\circ\else\textdegree\fi{}K to 300\ifmmode^\circ\else\textdegree\fi{}K. In this series, Ca${\mathrm{F}}_{2}$ and Zn${\mat…
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Get PDF Email Share Share with Facebook Tweet This Post on reddit Share with LinkedIn Add to CiteULike Add to Mendeley Add to BibSonomy Get Citation Copy Citation Text Roger C. Millikan, "Optical Properties of Soot," J. Opt. Soc. Am. 51, 698-699 (1961) Export Citation BibTex Endnote (RIS) HTML Plain Text Citation aler…