Changes in the Degree of LRO in B2-Ordered Intermetallic FeAl

1998 ◽  
Vol 552 ◽  
Author(s):  
K. Rohrhofer ◽  
H. Lang ◽  
P. Rosenkranz ◽  
R. Kozubski ◽  
W. Püschl ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Thermal Treatment ◽  
Long Range ◽  
Resistivity Measurement ◽  
Small Degree ◽  
Isochronal Annealing ◽  
Electrical Resistivity Measurement ◽  
Long Range Order ◽  
Temperature Range ◽  
Ordered Intermetallic

ABSTRACTChanges in the degree of long-range order (LRO) have been investigated in B2-ordered intermetallicFe-44.8at%Al by electrical resistivity measurement (resistometry). Order variations were observed during isochronal annealing for different states of initial thermal treatment. A complicated behaviour of resistivity changes with temperature is observed when starting with a small degree of disorder. Very slight re-ordering is found already at about 470K and is surprisingly followed by a slight disordering above 530K. Only for very long annealing times the expected ordering tendency is observed in this temperature range. Above 710K re-ordering is continued and reversible equilibrium changes of order with temperature are observed above 830K.

Comparison of temperature driven ordering in bulk foil and thin film of L10ordered FePd

2004 ◽  
Vol 842 ◽  
Author(s):  
Chaisak Issro ◽  
Wolfgang Püschl ◽  
Wolfgang Pfeiler ◽  
Bogdan Sepiol ◽  
Peter F. Rogl ◽  
...  
Keyword(s):  
Thin Film ◽  
Electrical Resistivity ◽  
Long Range ◽  
Molecular Beam ◽  
Resistivity Measurement ◽  
Range Order ◽  
Electrical Resistivity Measurement ◽  
Long Range Order ◽  
X Ray Diffraction ◽  
X Ray

ABSTRACTChanges in the degree of long-range order of 10 μm thick FePd foil are presented and compared with results on 50 nm thick FePd films. The films were produced by dc and rf magnetron co-sputtering on Si as well as by molecular beam epitaxy co-deposition on MgO substrates. Long-range order was studied by electrical resistivity measurement, X-ray diffraction and Möβbauer spectroscopy.

Integrated microcircuit on a diamond anvil for high-pressure electrical resistivity measurement

2005 ◽  
Vol 86 (6) ◽  
pp. 064104 ◽  
Author(s):  
Yonghao Han ◽  
Chunxiao Gao ◽  
Yanzhang Ma ◽  
Hongwu Liu ◽  
Yuewu Pan ◽  
...  
Keyword(s):  
High Pressure ◽  
Electrical Resistivity ◽  
Resistivity Measurement ◽  
Electrical Resistivity Measurement ◽  
Diamond Anvil

The temperature dependence of the long-range order parameter of Ni3Al

1977 ◽  
Vol 10 (1) ◽  
pp. 14-17 ◽  
Author(s):  
D. P. Pope ◽  
J. L. Garin
Keyword(s):  
Long Range ◽  
Order Parameter ◽  
Anomalous Behavior ◽  
Range Order ◽  
Range Order Parameter ◽  
Long Range Order ◽  
Temperature Range ◽  
Ordered Alloys ◽  
Fine Particle Size ◽  
Increasing Temperature

The macroscopic yield stress of Ni3Al increases rapidly with temperature, reaching a maximum at about 700°C. Such anomalous behavior has been observed in other ordered alloys which undergo partial disordering with increasing temperature, e.g. Cu3Au. The long-range order parameter, S, of stoichiometric Ni3Al powder was measured over the temperature range 25°C to 1000°C and great care was taken to ensure a fine particle size and thus avoid extinction effects. The results of this study showed that, in Ni3Al, S remains constant at about 0.93 over the entire temperature range investigated. This means that theories relating the strength of ordered alloys to S are not applicable to Ni3Al.

Investigation of the capillary rise in cement-based materials by using electrical resistivity measurement

2018 ◽  
Vol 173 ◽  
pp. 811-819 ◽  
Author(s):  
Kun Liang ◽  
Xiaohui Zeng ◽  
Xiaojun Zhou ◽  
Chenbo Ling ◽  
Ping Wang ◽  
...  
Keyword(s):  
Electrical Resistivity ◽  
Capillary Rise ◽  
Resistivity Measurement ◽  
Electrical Resistivity Measurement ◽  
Cement Based Materials
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