Domain Theory of Ferromagnetics Under Stress Part II. Magnetostriction of Polycrystalline Material

1938 ◽  
Vol 53 (6) ◽  
pp. 482-491 ◽  
Author(s):  
William Fuller Brown
Keyword(s):  
Polycrystalline Material ◽  
Domain Theory

Atomic orientation effects in proton stopping at low velocity

1983 ◽  
Vol 41 ◽  
pp. 708-709
Author(s):  
Kin Lam
Keyword(s):  
Polycrystalline Material ◽  
Charged Particles ◽  
Target Material ◽  
Stopping Power ◽  
Low Velocity ◽  
Electronic Density ◽  
Interatomic Distances ◽  
Frame Work ◽  
Image Position ◽  
Atomic Orientation

The energy of moving ions in solid is dependent on the electronic density as well as the atomic structural properties of the target material. These factors contribute to the observable effects in polycrystalline material using the scanning ion microscope. Here we outline a method to investigate the dependence of low velocity proton stopping on interatomic distances and orientations.The interaction of charged particles with atoms in the frame work of the Fermi gas model was proposed by Lindhard. For a system of atoms, the electronic Lindhard stopping power can be generalized to the formwhere the stopping power function is defined as

Determination of creep mechanisms in various silicon carbides via TEM

1986 ◽  
Vol 44 ◽  
pp. 484-487
Author(s):  
C. H. Carter ◽  
J. E. Lane ◽  
J. Bentley ◽  
R. F. Davis
Keyword(s):  
Heat Exchangers ◽  
Sintered Material ◽  
Polycrystalline Material ◽  
Chemical Vapor ◽  
Graphite Substrate ◽  
Second Phase ◽  
Reaction Bonding ◽  
Creep Mechanisms ◽  
Porous Sic

Silicon carbide (SiC) is the generic name for a material which is produced and fabricated by a number of processing routes. One of the three SiC materials investigated at NCSU is Norton Company's NC-430, which is produced by reaction-bonding of Si vapor with a porous SiC host which also contains free C. The Si combines with the free C to form additional SiC and a second phase of free Si. Chemical vapor deposition (CVD) of CH3SiCI3 onto a graphite substrate was employed to produce the second SiC investigated. This process yielded a theoretically dense polycrystalline material with highly oriented grains. The third SiC was a pressureless sintered material (SOHIO Hexoloy) which contains B and excess C as sintering additives. These materials are candidates for applications such as components for gas turbine, adiabatic diesel and sterling engines, recouperators and heat exchangers.

Domain theory of polarization echoes in ferroelectrics

1982 ◽  
Vol 43 (3) ◽  
pp. 567-574 ◽  
Author(s):  
U. Kh. Kopvillem ◽  
S.V. Prants
Keyword(s):  
Domain Theory

scholarly journals Learning From a Complementary-Label Source Domain: Theory and Algorithms

2021 ◽  
pp. 1-15
Author(s):  
Yiyang Zhang ◽  
Feng Liu ◽  
Zhen Fang ◽  
Bo Yuan ◽  
Guangquan Zhang ◽  
...  
Keyword(s):  
Domain Theory ◽  
Source Domain

Determination of Intrinsic Magnetic Parameters of SmCo5 Phase in Sintered Samples

2005 ◽  
Vol 498-499 ◽  
pp. 129-133 ◽  
Author(s):  
Marcos Flavio de Campos ◽  
Fernando José Gomes Landgraf
Keyword(s):  
Powder Metallurgy ◽  
Domain Wall ◽  
Kerr Effect ◽  
Critical Diameter ◽  
Optical Microscope ◽  
Domain Theory ◽  
Magnetic Domains ◽  
Magnetic Parameters ◽  
Intrinsic Parameters

SmCo5 magnets are usually produced by powder metallurgy route, including milling, compaction and orientation under magnetic field, sintering and heat treatment. The samples produced by powder metallurgy, with grain size around 10 μm, are ideal for determination of intrinsic parameters. The first step for determination of intrinsic magnetic parameters is obtaining images of domain structure in demagnetized samples. In the present study, the domain images were produced by means of Kerr effect, in a optical microscope. After the test of several etchings, Nital appears as the most appropriate for observation of magnetic domains by Kerr effect. Applying Stereology and Domain Theory, several intrinsic parameters of SmCo5 phase were determined: domain wall energy 120 erg/cm2, critical diameter for single domain particle size 2 μm and domain wall thickness 60 Å. In the case of SmCo5, and also other phases with high magnetocrystalline anisotropy, Domain Theory presents several advantages when compared with Micromagnetics.

Elastic properties of single phase γ-TiAl polycrystalline material at ambient and elevated temperature

2005 ◽  
Vol 13 (4) ◽  
pp. 261-265
Author(s):  
G. D. Bokuchava ◽  
H. G. Priesmeyer ◽  
V. A. Kudryashov ◽  
U. Tietze
Keyword(s):  
Elevated Temperature ◽  
Elastic Properties ◽  
Single Phase ◽  
Polycrystalline Material

Synthesis of high-quality AgGaSe2 polycrystalline material by the melt temperature oscillation method

1996 ◽  
Vol 46 (1) ◽  
pp. 100-102 ◽  
Author(s):  
Shi-fu Zhu ◽  
Bei-jun Zhao ◽  
Jun Liu ◽  
Hon-gan Jiang ◽  
Zheng-hui Li ◽  
...  
Keyword(s):  
Polycrystalline Material ◽  
Temperature Oscillation ◽  
High Quality ◽  
Melt Temperature ◽  
Oscillation Method
Sign in / Sign up

Export Citation Format

Share Document