Antiferromagnetic inclusions in lunar glass |
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| Authors: | AN Thorpe FE Senftle C Briggs C Alexander |
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| Institution: | 1. U.S. Geological Survey, Washington, D.C. USA;2. Howard University, Washington, D.C. USA |
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| Abstract: | The magnetic susceptibility of 11 glass spherules from the Apollo 15, 16, and 17 fines and two specimens of a relatively large glass spherical shell were studied as a function of temperature from room temperature to liquid helium temperatures. All but one specimen showed the presence of antiferromagnetic inclusions. Closely spaced temperature measurements of the magnetic susceptibility below 77 K on five of the specimens showed antiferromagnetic temperature transitions (Néel transitions). With the exception of ilmenite in one specimen, these transitions did not correspond to any transitions in known antiferromagnetic compounds. |
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