Field Orientation Dependence of Losses in Rectangular Multifilamentary Superconductors

We present microwave resistivity measurements at 21 GHz in YBa 2 Cu 3 O 7-δ thin film as a function of the temperature and the magnetic field. Measurements are taken in various relative orientations of the microwave current, dc magnetic field and c axis. Attention is focussed on measurements taken with the dc field parallel to the (a, b) planes. In moderate magnetic field, we show that the microwave magnetic response is made up of a vortex motion contribution, which can be described by conventional models, and a noticeable magnetic field induced increase of the quasiparticle density, which exhibits features typical of the existence of lines of nodes in the superconducting gap. We estimate the effective vortex viscosity for vortex motion across the (a, b) planes.

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Determination of magnetic anisotropy constants for bubble garnet epitaxial films using field orientation dependence in ferromagnetic resonances

Materials Research Bulletin ◽

10.1016/0025-5408(81)90137-9 ◽

1981 ◽

Vol 16 (8) ◽

pp. 957-966 ◽

Cited By ~ 45

Author(s):

Hiroshi Makino ◽

Yasuharu Hidaka

Keyword(s):

Magnetic Anisotropy ◽

Epitaxial Films ◽

Orientation Dependence ◽

Field Orientation

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Field-Orientation Dependence of Low-Energy Quasiparticle Excitations in the Heavy-Electron SuperconductorUBe13

Physical Review Letters ◽

10.1103/physrevlett.114.147002 ◽

2015 ◽

Vol 114 (14) ◽

Cited By ~ 28

Author(s):

Yusei Shimizu ◽

Shunichiro Kittaka ◽

Toshiro Sakakibara ◽

Yoshinori Haga ◽

Etsuji Yamamoto ◽

...

Keyword(s):

Orientation Dependence ◽

Low Energy ◽

Field Orientation ◽

Heavy Electron ◽

Quasiparticle Excitations

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Influence of Magnetic Field Direction and Temperature on Rearrangement of Martensite Variants in Fe-31.2at.%Pd

Materials Science Forum ◽

10.4028/www.scientific.net/msf.512.201 ◽

2006 ◽

Vol 512 ◽

pp. 201-204 ◽

Cited By ~ 1

Author(s):

Tatsuaki Sakamoto ◽

Takashi Fukuda ◽

Tomoyuki Kakeshita

Keyword(s):

Magnetic Field ◽

Shear Stress ◽

Magnetocrystalline Anisotropy ◽

Parent Phase ◽

Anisotropy Constant ◽

Orientation Dependence ◽

Measured Temperature ◽

Magnetic Field Direction ◽

Field Orientation ◽

Twinning Plane

We have measured temperature dependence of the uniaxial magnetocrystalline anisotropy constant Ku and the shear stress τr eq required for the twinning plane movement of an Fe-31.2Pd alloy in order to explain the field orientation dependence of rearrangement of martensite variants (RMV) of this alloy in the field-cooling process. Under the [001]P field (P represents parent phase), the RMV occurs perfectly at the temperatures where the measurement was performed; in this case, the magnetic shear stress acting across the twinning plane τmag, which is evaluated from Ku, becomes nearly twice as large as τr eq. On the other hand, under the [011]P field, the RMV occurs partially at all the measuring temperatures; in this case the maximum of τmag is nearly the same as τr eq. It is successful to evaluate the following relation quantitatively; τmag> τr eq is satisfied when RMV occurs under magnetic field.

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