Short-Range Antiferromagnetic Ordering of Netlike S = 1/2 Linear Trimeric Units in the Copper Germanate K2Cu3Ge4O12

The intensity and line width of the electron paramagnetic resonance have been studied above the Néel temperature in polycrystalline CrVO4. The intensity data give TN = 51 ± 1 °K. Both the intensity and line-width data suggest considerable short-range order above TN.

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Evidence of ferromagnetic short-range correlations in cubic La1−xSrxMnO3−δ(x = 0.80, 0.85) above antiferromagnetic ordering

physica status solidi (b) ◽

10.1002/pssb.201451552 ◽

2015 ◽

Vol 252 (8) ◽

pp. 1832-1838 ◽

Cited By ~ 9

Author(s):

Aga Shahee ◽

Kiran Singh ◽

Ram J. Choudhary ◽

Niranjan P. Lalla

Keyword(s):

Short Range ◽

Antiferromagnetic Ordering ◽

Short Range Correlations

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Short range antiferromagnetic ordering in vitreous Fe2O3P2O5

Journal of Non-Crystalline Solids ◽

10.1016/0022-3093(76)90095-8 ◽

1976 ◽

Vol 21 (1) ◽

pp. 95-105 ◽

Cited By ~ 30

Author(s):

F.A. Wedgwood ◽

A.C. Wright

Keyword(s):

Short Range ◽

Antiferromagnetic Ordering

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SHORT RANGE ANTIFERROMAGNETIC ORDERING IN FLUORIDE GLASSES "PbMnFeF7 AND "Pb2MnFeF9"

Le Journal de Physique Colloques ◽

10.1051/jphyscol:19829133 ◽

1982 ◽

Vol 43 (C9) ◽

pp. C9-677-C9-680

Author(s):

A. Le Bail ◽

C. Jacoboni ◽

R. De Pape

Keyword(s):

Short Range ◽

Fluoride Glasses ◽

Antiferromagnetic Ordering

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Short-range antiferromagnetic ordering with spiral structure in the finite-doping regime

Physical Review B ◽

10.1103/physrevb.42.803 ◽

1990 ◽

Vol 42 (1) ◽

pp. 803-809 ◽

Cited By ~ 15

Author(s):

Z. Y. Weng ◽

C. S. Ting

Keyword(s):

Short Range ◽

Spiral Structure ◽

Antiferromagnetic Ordering

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Domain coarsening by grain boundary migration in ordered Ni4Mo

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s0424820100144279 ◽

1986 ◽

Vol 44 ◽

pp. 560-561

Author(s):

K. Vasudevan ◽

H. P. Kao ◽

C. R. Brooks ◽

E. E. Stansbury

Keyword(s):

Grain Boundary ◽

Grain Boundaries ◽

Short Range ◽

Boundary Migration ◽

Grain Boundary Migration ◽

Rapid Cooling ◽

Temperature Range ◽

Fee Structure ◽

Domain Coarsening ◽

Boundary Reaction

The Ni4Mo alloy has a short-range ordered fee structure (α) above 868°C, but transforms below this temperature to an ordered bet structure (β) by rearrangement of atoms on the fee lattice. The disordered α, retained by rapid cooling, can be ordered by appropriate aging below 868°C. Initially, very fine β domains in six different but crystallographically related variants form and grow in size on further aging. However, in the temperature range 600-775°C, a coarsening reaction begins at the former α grain boundaries and the alloy also coarsens by this mechanism. The purpose of this paper is to report on TEM observations showing the characteristics of this grain boundary reaction.

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Ordering in Ni4Mo by TEM and APFIM

Proceedings, annual meeting, Electron Microscopy Society of America ◽

10.1017/s042482010012597x ◽

1987 ◽

Vol 45 ◽

pp. 214-215

Author(s):

E.A. Kenik ◽

T.A. Zagula ◽

M.K. Miller ◽

J. Bentley

Keyword(s):

Electron Irradiation ◽

Low Temperatures ◽

Short Range ◽

Atom Probe ◽

Range Order ◽

Considerable Time ◽

Probe Field ◽

Disordered Phase ◽

Transmission Electron ◽

Diffraction Patterns

The state of long-range order (LRO) and short-range order (SRO) in Ni4Mo has been a topic of interest for a considerable time (see Brooks et al.). The SRO is often referred to as 1½0 order from the apparent position of the diffuse maxima in diffraction patterns, which differs from the positions of the LRO (D1a) structure. Various studies have shown that a fully disordered state cannot be retained by quenching, as the atomic arrangements responsible for the 1½0 maxima are present at temperatures above the critical ordering temperature for LRO. Over 20 studies have attempted to identify the atomic arrangements associated with this state of order. A variety of models have been proposed, but no consensus has been reached. It has also been shown that 1 MeV electron irradiation at low temperatures (∼100 K) can produce the disordered phase in Ni4Mo. Transmission electron microscopy (TEM), atom probe field ion microscopy (APFIM), and electron irradiation disordering have been applied in the current study to further the understanding of the ordering processes in Ni4Mo.

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