(312) Wagner, A. J., Vos, A., Rec. Trav. Chim. 84,603 (1965). (313) Wallwork, S. C., Addison, W. E., J . Chem. SOC.(London) 1965, 2925. (314) Watson, D. G., Sweet,, R. M., Marsh, R. E., Acta Cryst. 19, 573 (1965). (315) Webb, M. W., Kay, H. F., Grimes, N. W., Ibid., 18, 740 (1965). (316) Wei, C. H., Dahl, L. F., Znorg. Chem. 4, 1 (1965). (317) Wei, L., Stogsdill, R. M., Lingafelter, E. C., Acta Cryst. 17, 1058 (1964).
(318) Weiss E., J . OrganometaL Chem. 2, 314 (1964). (319) Zbid., 4, 101 (1965). (320) Weiss. E.. Lucken. E. A. C.. Zbid.. ‘ 2,’197 (1964): (321) Weiss, J., 2. Anorg. Allgem. Chem. 333, 314 (1964). (322) Wheatley, P. J., J. Chem. SOC. (London) 1964, 3718. (323) Zbid., 1965, 3136. (324) Willett. R. D.. J . Chem. Phus. 41. ‘ 2243 (i964j. (325) Wilson, A., McGeachin, H. McD., Acta Cryst. 17, 1352 (1964).
(326) Wong, C. H., Marsh, R. E., Schomaker, V., Zbid., p. 131. (327) Wong, C. H., Yen, T. M., Lee, T. Y., Ibid., 18, 340 (1965). (328) Woodward, P., Dahl, L. F., Abel, E. W., Crosse, B. C., J . Am. Chem. SOC. 87, 5251 (1965). (329) Zschariasen, W. H., Acta Cryst. 17, 749 (1964). (330) Zalkin, A,, Templeton, D. H., Hopkins, T. E., J . Am. Chem. SOC.87, 3988 (1965).
Magnetic Susceptibility: Recent Aspects of Instrumentation and Application 1.
N. Mulay
I
and lndumati 1. Mulay, Materials Research laboratory, Pennsylvania State University, University Park, Pa.
third review on magnetic susceptibility, we review some selected aspects of instrumentation and applications. The first (31A) and second reviews (34A) appeared in 1962 and 1964, respectively. This review covers selected developments generally from about Kovember 1963 through about November 1965. The elements of arbitrariness, which may appear to some readers concerning the selection of the material, continue to exist in the present review. Hence, it should not be regarded as an extensive review of a complete bibliographic nature on what may be commonly regarded as “magnetochemistry.” Introductory comments in the last review (34A) partly reflect the agony a t discovering the vast and everincreasing growth in magnetics literature and inability to cover all important aspects. The reviewer is then baffled by deciding what to select and what not to select. The titanic growth in magnetics literature refers to the over-all growth in magnetics “technology” and in part to its “science.” We do not, therefore, review literature on magnetic materials and devices, magnetic measurements such as permeability, remanence, etc., which characterize magnetic materials; however, references to new books and review articles on magnetic materials research are included. Readers who want a thorough bibliographic list of references on all branches of magnetics, or on magnetic susceptibility alone, must be directed to the voluminous pages of chemical and other similar abstracts. 3 THIS
GENERAL LITERATURE
Abstract Services a n d G u i d e s to L i t e r a t u r e . One feels as if he were
going through a maze during the retrieval of scientific information of specific interest from sources such as Chemical or Science Abstracts. However, two abstracting services, introduced in the past few years, make the retrieval task somewhat easy. Cumulative Solid State Abstracts ( l 4 A )
cover aspects such as solid state physics, solid state devices and their applications, metallurgy and chemistry of solids. One large section covers “,Magnetic Properties,” which in turn is subclassified into categories like measurement, effect of various parameters on magnetic susceptibility, other magnetic properties and magnetic phenomena, magnetic order, dia-, para-, and other types of magnetic behavior. This subclassification has been found generally very convenient, although there is room for further improvement. As the name implies, the material selected for these abstracts refers to the “solid state”; the extent to which important aspects of studies on other states of matter may have been ignored and the basis for doing so are not very clear from the existing organization of these abstracts. Another good service pertains to abstracts of reports of research and papers presented at some selected meetings and symposia. “Scientific and Technical Aerospace Reports” (STAR) are published by the National Aeronautics and Space Administration (NASA) of the United States Government (42A). These reports generally refer to research supported by NASA and related federal agencies in the United States, but an attempt seems to have been made to cover research reports from selected laboratories in other countries. Various research reports and proceedings of international meetings, conferences, and symposia, and especially those which are not made available on a large scale by publishers in various countries, seem to pose a threat to the normal publishing channels, such as the scientific journals. The wealth of information which is hidden, and which in some cases continues to remain hidden in such iiproceedingsl’ and “reports” because of lack of subsequent publication in scientific journals is amazing. I n this respect, new publications like STAR provide some relief, but here again the basis for the selection
of specific proceedings of meetings is not clear. l‘here is still a need for an abstracting service, covering papers presented a t meetings, large or small. The organization of STAR and its long numbering system a t first seem complicated and typically “governmental”; however, one gets used to this quickly enough to make effective use of this service. The index to literature on magnetism, compiled by the Bell Telephone Laboratories ( $ A ) , is highly specialized and, unfortunately, ignores many interesting aspects of magnetochemistry. A guide to the literature on electronic properties (including magnetic properties) has been compiled by Johnson
(MA). Monographs and Books. An English translation of the revised and enlarged edition of “Diamagnetism and the Chemical Bond” by Dorfman ( 1 5 A ) , referred to in an earlier review ( 3 4 A ) , is now available. It outlines several structural aspects of chemistry. An earlier publication (33A) describing some theoretical, experimental, and application aspects of magnetic susceptibility is now available as a paperback monograph. Books by Smart (44A), Chikazumi and Charap ( I l A ) , and Morrish (SOA) provide an excellent theoretical discourse, of great value to magnetochemists. The second volume by Rad0 and Suhl (38A) fits in well with t>heir objective of providing a treatise on modern theory of magnetism and magnetic materials. Other strictly theoretical books with abstract mathematical orientation have been written for experts in the area by ,Mattis (29A) and Birss (SA). Contributions by Cheston ( 9 A ) and Pease and coauthors (%A) should also prove interesting to chemists. The area of ferromagnetism and magnetic films has been covered by Craik and Tebble ( I d A ) , Prutton @?‘A),and Soohoo (45A). Turov (48A) discusses physical properties of magnetiVOL 38, NO. 5, APRIL 1966
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501 R
cally ordered crystals. A book entitled L‘MagneticCeramic
