KONDO EFFECT AND LOCALIZED SPIN FLUCTUATIONS IN THE Zn-TRANSITION METAL SYSTEM

Mechanical alloying (MA), super cooling process, etc. have been used to prepare amorphous phases, metastable solid solutions, nanocrystals, and so on. It is important to consolidate these powders for evaluating the physical properties, and for applications. On the other hand, shock compression can be used as an effective consolidation method for metastable material powders without recrystallization or decomposition. We had prepared metastable transition-metal system bulk alloys and compounds (Fe-Co, Fe-Cu, Fe-W, Co-Cu, Sm-Fe-N systems, etc) by using MA and shock compression. The Fe-Cu and Co-Cu metastable solid solutions showed a fit curve to the Slater-Pauling one. The Co-Cu metastable solid solution bulk alloy showed a magneto-resistance. The Fe-Co fine-grained bulk alloys show the higher coeicivity than that of molten alloy. In this paper, the preparation and magnetic properties of the metastable alloys (Fe-Co, Fe-Cu, Co-Cu systems) are reviewed, and the applications to materials science and engineering are discussed.

Download Full-text

Nonadiabatic behavior of a transition metal system: exothermic reactions of iron(1+)(6D,4F) and propane

The Journal of Physical Chemistry ◽

10.1021/j100301a001 ◽

1987 ◽

Vol 91 (17) ◽

pp. 4433-4435 ◽

Cited By ~ 28

Author(s):

Richard H. Schultz ◽

P. B. Armentrout

Keyword(s):

Transition Metal ◽

Metal System ◽

Exothermic Reactions ◽

Transition Metal System

Download Full-text

Local-space approximation for treatment of chemisorption: Application to a model transition-metal system

Physical Review B ◽

10.1103/physrevb.35.7847 ◽

1987 ◽

Vol 35 (15) ◽

pp. 7847-7856 ◽

Cited By ~ 13

Author(s):

Celso P. DeMelo ◽

Maria Cristina dos Santos ◽

Maria Matos ◽

Bernard Kirtman

Keyword(s):

Transition Metal ◽

Metal System ◽

Local Space ◽

Transition Metal System ◽

Model Transition

Download Full-text

A first-principles investigation of the effect of relaxation on the alloy formation in the aluminum-3d-transition-metal system

The Physics of Metals and Metallography ◽

10.1134/s0031918x12050043 ◽

2012 ◽

Vol 113 (5) ◽

pp. 427-437 ◽

Cited By ~ 1

Author(s):

N. Yu. Nikitin

Keyword(s):

Transition Metal ◽

First Principles ◽

Alloy Formation ◽

Metal System ◽

Transition Metal System

Download Full-text

N2H4-Koordination an Eisen-Schwefel-Zentren: Synthese und Struktur von [N(C4H9)4]2[μ-N2H4{Fe(S2C6H4)2}2]/N2H4Coordination on Iron Sulfur Centres: Synthesis and Structure of [N(C4H9)4]2[μ-N2H4{Fe(S2C6H4)2}2]

Zeitschrift für Naturforschung B ◽

10.1515/znb-1978-1130 ◽

1978 ◽

Vol 33 (11) ◽

pp. 1341-1346 ◽

Cited By ~ 23

Author(s):

◽

Peter Kreutzer ◽

Gottfried Huttner ◽

Albin Frank

Keyword(s):

Transition Metal ◽

Complex Salt ◽

Metal System ◽

Iron Sulfur ◽

Transition Metal System

Abstract The reactions of N2H4 and N2H4 · H2O respectively, with [N(C4H9)4][Fe(S2C6H4)2] are investigated. With N2H4 · H2O the complex salt [N(C4H9)4]2[μ-N2H4{Fe(S2C6H4)2}2] is obtained, the first hydrazine complex of a dithiolato transition metal system, which can be fully characterized. The structure shows, that the compound consists of discrete cations and anions; in the centrosymmetrical anions two [FeS4] centres are bridged by a hydrazine ligand with Fe-N distances of 224 pm, N-N distances of 142 pm and Fe-N-N angles of 116.1°. The iron atoms are square pyramidally configurated and located 35 pm above the plane determined by the S atoms.

Download Full-text