Residual magnetization measurements of a motor to be used in satellites

AbstractMagnetization measurements were performed as a function of magnetic field H and temperature T on samples of nine different materials including clear fused quartz, cartridge brass, G-10 glass-reinforced epoxy, acetal homopolymer, glass-filled acetal, phenolic, and other plastics. A small yet distinct amount of ferromagnetic or paramagnetic impurities is observed in all the materials investigated in this study except quartz. In contrast, the magnetic response of quartz is typical of a diamagnet over the temperature range 5 K to 300 K. The volume susceptibility is equal to −4.4×10−7 (cgs) over the whole temperature range.

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1,2,4-Triazole Complexes, IV

Zeitschrift für Naturforschung A ◽

10.1515/zna-1978-0716 ◽

1978 ◽

Vol 33 (7) ◽

pp. 848-854 ◽

Cited By ~ 11

Author(s):

D. W. Engelfriet ◽

W. L. Groeneveld

Keyword(s):

Neutron Powder Diffraction ◽

Exchange Constant ◽

Heisenberg Antiferromagnet ◽

Saturation Field ◽

Magnetization Measurements ◽

Intermediate Spin ◽

Spin Arrangement ◽

Pulsed Field Magnetization ◽

Structural And Magnetic Properties ◽

Heat Capacity Measurements

Magnetic susceptibility measurements on single crystals of Mn(II)(trz)2(NCS)2 in the temperature range 1.8 - 300 K are reported. The compound has two-dimensional structural and magnetic properties. The data from susceptibility measurements are accounted for by considering the material to be a quadratic-layer, S = 5/2 Heisenberg antiferromagnet. From the comparison of the data with predictions from series expansions the intralayer exchange constant was found to be J/k = -0.25 K. A transition to the antiferromagnetic state is observed at TN = 3.29 K with the b axis being the preferred axis. Magnetization measurements at 1.8 K along the b axis reveal a spin-flop transition at 10.8 kOe. The occurence of a second discontinuity in the magnetization curve at 15.6 kOe is explained by assuming that the spin system goes to the spin-flop state via an intermediate spin arrangement, as is suggested by the presence of tilted MnN6 octahedra. From pulsed-field magnetization measurements at 1.17 K, a saturation field Hc = 74 kOe is found which also leads to J / k = -0.25 K. With the aid of neutron powder diffraction at 1.2 K the magnetic space group was determined to be Apb′a 2′! Preliminary results from heat capacity measurements on the corresponding Fe(II), Co(II), Ni(II) and Cu(II) compounds are reported.

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Cobalt nanorods fully encapsulated in carbon nanotube and magnetization measurements by off-axis electron holography

Applied Physics Letters ◽

10.1063/1.2213202 ◽

2006 ◽

Vol 88 (24) ◽

pp. 243118 ◽

Cited By ~ 18

Author(s):

Takeshi Fujita ◽

Yasuhiko Hayashi ◽

Tomoharu Tokunaga ◽

Kazuo Yamamoto

Keyword(s):

Carbon Nanotube ◽

Electron Holography ◽

Magnetization Measurements

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