scholarly journals Ограничение допустимой коэрцитивной силы, вызванное полем рассеяния магнита

2019 ◽  
Vol 89 (7) ◽  
pp. 1055
Author(s):  
Н.С. Моисеева ◽  
И.И. Резчикова ◽  
Д.В. Королев ◽  
Р.Б. Моргунов ◽  
В.П. Пискорский
Keyword(s):  
Rare Earth ◽  
Lower Bound ◽  
Coercive Force ◽  
Rare Earth Alloys ◽  
Working Temperature ◽  
Technical Requirements ◽  
The Given

AbstractIt is shown that the shape of a sample determines the allowed lower-bound limit of the coercive force of material that can be used for fabrication of magnets with the given shape. Rings with radial magnetization are used as examples to show that such samples can be made of only rare-earth alloys with the coercive force that is sufficiently high to satisfy technical requirements at the maximum allowed working temperature of the magnet.

Acoustic properties of rare-earth alloys Tb0.27Dy0.73(Fe1-xMnx)1.9

1994 ◽  
Vol 04 (C5) ◽  
pp. C5-705-C5-708
Author(s):  
V. PREOBRAZHENSKY ◽  
I. DUBENKO ◽  
N. ECONOMOV ◽  
A. ZAIKIN
Keyword(s):  
Rare Earth ◽  
Acoustic Properties ◽  
Rare Earth Alloys

Effects of non-axial electric field gradients on the ferromagnetic state of amorphous rare-earth alloys

1980 ◽  
Vol 58 (5) ◽  
pp. 629-632 ◽  
Author(s):  
H. Hernandez ◽  
R. Ferrer ◽  
M. J. Zuckermann
Keyword(s):  
Rare Earth ◽  
Electric Field ◽  
Ferromagnetic State ◽  
Rare Earth Alloys ◽  
Electric Field Gradients ◽  
Axial Electric Field ◽  
Ferromagnetic Alloys ◽  
Field Gradients ◽  
Ordered State

We discuss the influence of non-axial electric field gradients on the ordered state of amorphous ferromagnetic alloys containing rare-earth atoms.

Solid solution intra-rare-earth alloys: A review of alloying behavior and structure

1970 ◽  
Vol 22 (2) ◽  
pp. 149-173 ◽  
Author(s):  
C.C. Koch
Keyword(s):  
Solid Solution ◽  
Rare Earth ◽  
Rare Earth Alloys

scholarly journals A double peak of the coercive force near the compensation temperature in the rare earth iron garnets

2008 ◽  
Vol 88 (2) ◽  
pp. 209-228 ◽  
Author(s):  
M. Uemura ◽  
T. Yamagishi ◽  
S. Ebisu ◽  
S. Chikazawa ◽  
S. Nagata
Keyword(s):  
Rare Earth ◽  
Coercive Force ◽  
Compensation Temperature ◽  
Double Peak ◽  
Iron Garnets ◽  
The Rare Earth

Transport anomalies in dilute silver-rare earth alloys

1971 ◽  
Vol 32 (6) ◽  
pp. 1205-1209 ◽  
Author(s):  
C.L. Foiles
Keyword(s):  
Rare Earth ◽  
Rare Earth Alloys

Combo separability criteria and lower bound on concurrence

2021 ◽  
Author(s):  
Zangi Sultan ◽  
Jiansheng Wu ◽  
Cong-Feng Qiao
Keyword(s):  
Lower Bound ◽  
Correlation Matrix ◽  
Density Operator ◽  
Singular Values ◽  
Quantum Information Theory ◽  
Separability Criteria ◽  
The Given ◽  
Ky Fan ◽  
Natural Way ◽  
Extract Information

Abstract Detection and quantification of entanglement are extremely important in quantum information theory. We can extract information by using the spectrum or singular values of the density operator. The correlation matrix norm deals with the concept of quantum entanglement in a mathematically natural way. In this work, we use Ky Fan norm of the Bloch matrix to investigate the disentanglement of quantum states. Our separability criterion not only unifies some well-known criteria but also leads to a better lower bound on concurrence. We explain with an example how the entanglement of the given state is missed by existing criteria but can be detected by our criterion. The proposed lower bound on concurrence also has advantages over some investigated bounds.

A Model of Secure Functioning of Computer Systems

2021 ◽  
Vol 12 (3) ◽  
pp. 150-156
Author(s):  
A. V. Galatenko ◽  
◽  
V. A. Kuzovikhina ◽  
Keyword(s):  
Lower Bound ◽  
Computer System ◽  
Finite Automaton ◽  
Nonnegative Integer ◽  
The Other ◽  
Shannon Function ◽  
Security Breaches ◽  
System Functioning ◽  
The Cost ◽  
The Given

We propose an automata model of computer system security. A system is represented by a finite automaton with states partitioned into two subsets: "secure" and "insecure". System functioning is secure if the number of consecutive insecure states is not greater than some nonnegative integer k. This definition allows one to formally reflect responsiveness to security breaches. The number of all input sequences that preserve security for the given value of k is referred to as a k-secure language. We prove that if a language is k-secure for some natural and automaton V, then it is also k-secure for any 0 < k < k and some automaton V = V (k). Reduction of the value of k is performed at the cost of amplification of the number of states. On the other hand, for any non-negative integer k there exists a k-secure language that is not k"-secure for any natural k" > k. The problem of reconstruction of a k-secure language using a conditional experiment is split into two subcases. If the cardinality of an input alphabet is bound by some constant, then the order of Shannon function of experiment complexity is the same for al k; otherwise there emerges a lower bound of the order nk.

scholarly journals Effect of Al addition to Rapidly Solidified Mg-Cu-Rare Earth Alloys

2016 ◽  
Vol 19 (suppl 1) ◽  
pp. 2-7 ◽  
Author(s):  
Silvia Rozenberg ◽  
Fernando Audebert ◽  
Marina Galano ◽  
Isabel Vergara Ogando ◽  
Cecilia Mendive
Keyword(s):  
Rare Earth ◽  
Rare Earth Alloys ◽  
Al Addition ◽  
Rapidly Solidified
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