Search Results - "Oja, A S"

Nuclear magnetic ordering in simple metals at positive and negative nanokelvin temperatures by Oja, A. S., Lounasmaa, O. V.

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Increasing the dynamic range of a micromechanical moving-plate capacitor by Kyynarainen, J M, Oja, A S, Seppa, H

“…Large electrostatic forces on a micromechanical capacitor plate can be obtained if the capacitor is tuned by using an inductor. Such an LC circuit can be used…”
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A versatile nuclear demagnetization cryostat for ultralow temperature research by YAO, W, KNUUTTILA, T. A, NUMMILA, K. K, MARTIKAINEN, J. E, OJA, A. S, LOUNASMAA, O. V

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Nuclear order in copper: new type of antiferromagnetism in an ideal fcc system by ANNILA, A. J, CLAUSEN, K. N, LINDGARD, P.-A, LOUNASMAA, O. V, OJA, A. S, SIEMENSMEYER, K, STEINER, M, TUORINIEMI, J. T, WEINFURTER, H

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Cross relaxation by single spin flips in silver at nanokelvin temperatures by OJA, A. S, ANNILA, A. J, TAKANO, Y

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Selection of the ground state in type-I fcc antiferromagnets in an external magnetic field by HEINILÄ, M. T, OJA, A. S

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Investigations of nuclear antiferromagnetic ordering in copper at nanokelvin temperatures by HUIKU, M. T, JYRKKIO, T. A, KYYNÄRÄINEN, J. M, LOPONEN, M. T, LOUNASMAA, O. V, OJA, A. S

“…Nuclear magnetism in metallic copper has been studied by demagnetizing highly polarized spins to low fields where spin-spin interactions dominate. In earlier…”
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Indirect nuclear spin interactions and nuclear ordering in metals by OJA, A. S, KUMAR, P

“…All conduction electron-mediated nuclear spin interactions that arise from the electron--nuclear hyperfine Hamiltonian are calculated using Bardeen's spherical…”
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Nuclear Magnetism in Metals by Oja, A S

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Phase diagram for spontaneous nuclear magnetic ordering in copper by HUIKU, M. T, JYRKKIO, T. A, KYYNARAINEN, J. M, OJA, A. S, LOUNASMAA, O. V

“…The static susceptibility of a single-crystal Cu specimen has been measured at nanokelvin temp., parallel and perpendicular to the external magnetic field B …”
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Neutron-diffraction studies of the nuclear magnetic phase diagram of copper by ANNILA, A. J, CLAUSEN, K. N, OJA, A. S, TUORINIEMI, J. T, WEINFURTER, H

“…The spontaneous antiferromagnetic (AF) order in the nuclear spin system of Cu was studied by use of neutron-diffraction experiments at nk temperatures. Copper…”
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MEMS-based AC voltage reference by Karkkainen, A., Pesonen, N., Suhonen, M., Oja, A.S., Manninen, A., Tisnek, N., Seppa, H.

“…An ac root-mean-square (RMS) voltage reference based on a microelectromechanical system (MEMS) component is presented. The device stability is investigated in…”
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Nuclear magnetism in a metal by KUMAR, P, KURKIJARVI, J, OJA, A. S

“…The ordered-state properties of an assembly of nuclear spins, interacting via a classical dipolar and conduction-electron-mediated exchange interaction are…”
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Ground state of nuclear spins in fcc metals by VIERTIO, H. E, OJA, A. S

“…The ground state of nuclear spins in fcc metals has been investigated within the noninteracting spin-wave theory. Phase diagrams are found to possess detailed…”
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Optimized design and process for making a DC voltage reference based on MEMS by Karkkainen, A., Awan, S.A., Kyynarainen, J., Pekko, P., Oja, A.S., Seppa, H.

“…A micromechanical moving plate capacitor has been designed and fabricated for use as a dc voltage reference. The reference is based on the characteristic…”
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Stability of microelectromechanical devices for electrical metrology by Kyynarainen, J., Oja, A.S., Seppa, H.

“…Microelectromechanical systems (MEMS) have been recently proposed for realizing several references in electrical metrology. Such devices are formed from…”
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Magnetically Ordered Structures of Nuclear Spins in fcc Metals by Oja, A. S., Viertiö, H. E.

“…In order to find how the extensive degeneracy is lifted in the mean field ground state of nuclear spins in fcc metals, various fluctuation effects have been…”
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Antiferromagnets with anisotropic spin-spin interactions : stability of the zero-field structure in an external field by OJA, A. S, VIERTIÖ, H. E

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Phase diagram for spontaneous nuclear magnetic ordering in copper by KUMAR, P, KURKIJÄRVI, J, OJA, A. S

“…The recently suggested B--S phase diagram of ordered nuclear spin phases in Cu (Huiku et al. , Phys Rev. Lett. , 1984, 53, 1692) in terms of the…”
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Interplay of three antiferromagnetic modulations in the nuclear-spin system of copper by VIERTIÖ, H. E, OJA, A. S

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