Width of the Darwin Table for Forbidden Reflections

Ignatovich, V. K.; Protopopescu, Daria; Utsuro, Masahiko

doi:10.1103/physrevlett.77.4202

Cited by 11 publications

(11 citation statements)

References 13 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Prior work on Fe-W and Fe-Mo alloys also shows a sensitivity of magnetostriction values observed to thermal history ͑Table II͒. [13][14][15][16][17] Faint/very weak peaks observed on either side of the ͑200͒ peak that appear to be anomalous are second and higher order harmonics of the fundamental ͑200͒ peak. Figure 3 shows the -2 scan for the ͓100͔-oriented ␣-Fe-20 at.…”

Section: A Xrd Analysismentioning

confidence: 99%

Short range ordering and magnetostriction in Fe–Ga and other Fe alloy single crystals

Guruswamy

Jayaraman

Corson

et al. 2008

Journal of Applied Physics

View full text Add to dashboard Cite

Articles you may be interested inInfluence of plastic deformation on the magnetostrictive behavior of [126]-oriented Fe-Ga alloy single crystals J. Appl. Phys. 111, 043911 (2012); 10.1063/1.3686680 Development of 〈100〉 crystallographic texture in magnetostrictive Fe-Ga microwires produced by in-rotating water spinning methodThe magnetostrictive behaviors of Fe-Ga, Fe-Mo, Fe-W, and other Fe alloys have been observed to be sensitive to their thermal history. In this work, the changes in the structure with thermal history and how they correlate with the observed magnetostriction values in Fe-Ga, Fe-W, and Fe-Mo single crystals are examined. Single crystals were grown using the vertical Bridgman crystal growth technique. The magnetostriction constant ͑3 / 2͒ 100 measured in ͑i͒ as-grown and air-cooled ͑DG͒ and ͑ii͒ annealed and water quenched single crystal samples of Fe-Ga and Fe-W alloys clearly indicate that annealing in the ␣-phase region followed by rapid quenching improves the magnetostriction values. High-resolution x-ray diffraction ͑XRD͒ studies on ͓100͔-oriented Fe-Ga as well as other Fe alloy single crystals show ͑i͒ a diffuse scattering peak indicative of short range ordering, the extent of which depends on composition and thermal history, and ͑ii͒ ͑200͒ peak splitting and broadening indicative of the presence of long range ordered coherent second phases and associated coherency strains. A detailed examination of the XRD patterns suggests that the changes in magnetostriction with composition and thermal history are related to the local strain modulations associated with the solutes, short range order, long range ordered coherent second phases, incoherent precipitates, and other structural defects.

show abstract

Section: A Xrd Analysismentioning

confidence: 99%

Short range ordering and magnetostriction in Fe–Ga and other Fe alloy single crystals

Guruswamy

Jayaraman

Corson

et al. 2008

Journal of Applied Physics

View full text Add to dashboard Cite

show abstract

“…4͑a͒ and 4͑b͒ also show a very weak ͑110͒ peak at a 2 value of about 44°and other weak peaks that are orders of magnitude smaller than the very high intensity ͑200͒ peak expected for ͓200͔ oriented crystal. 22,23,[25][26][27] From the observations made during the present work, it appears to depend also on the nonrandom distribution of atoms in the solid solution and extent of deviation from the perfect orientation of the crystal faces. A similar observation has been made by other researchers in FeGa alloys.…”

Section: Standard -2 Scansmentioning

confidence: 91%

Ordering, magnetostriction, and elastic properties in Fe-27.5at.% Ga alloy single crystals

Jayaraman

Corson

Guruswamy

2007

Journal of Applied Physics

View full text Add to dashboard Cite

Fe-Ga alloys, with composition around 27.5 at. % Ga, can be heat treated to obtain ␣ ͑A2, bcc͒, ␣Љ ͑D0 3 -like, ordered bcc͒, ␤-Fe 3 Ga ͑D0 19 , ordered hexagonal͒, and ␣-Fe 3 Ga ͑L1 2 ordered fcc͒ phases. In this work, the influence of ␣Љ ordering on the magnetostriction coefficient ͑3/2͒ 100 , elastic constants ͑C 11 , C 12 , and C 44 ͒, and the magnetomechanical coefficients ͑B 1 ͒ of the single crystals of ␣-Fe-27.5 at.% Ga and ␣Љ-Fe-27.5 at. % Ga alloy is examined. Single crystals of Fe-27.5 at. % Ga were grown using the vertical Bridgman technique. Magnetostriction measurements were performed using ͓100͔-oriented single crystals. Elastic constants were estimated using resonant ultrasound spectroscopy and analysis technique. It is shown that the ␣Љ ordering in Fe-27.5 at. % Ga alloy decreases the ͑3/2͒ 100 value from that of ␣ phase. This is consistent with our previous work on polycrystalline at. % Ga alloys. The ␣-Fe-27.5 at.% Ga alloy single crystal was found to have a higher magnetoelastic coupling constant than the ␣Љ-Fe-27.5 at. % Ga alloy single crystal.

show abstract

“…In these formulae, according to Refs. [9,10], r 0 and t 0 are the reflection and transmission amplitudes for the first potential well of a semi-infinite periodic potential (see, Fig. 4).…”

Section: The Pöschl-teller Potential In the Problem Of Reflection Of mentioning

confidence: 99%

“…[9,10] the reflection amplitude by the periodic semi-infinite Pöschl-Teller potential can be calculated using the following by formula: …”

Section: The Pöschl-teller Potential In the Problem Of Reflection Of mentioning

confidence: 99%

Quantum resonances in reflection of relativistic electrons and positrons

Eykhorn

Korotchenko

Pivovarov

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

Width of the Darwin Table for Forbidden Reflections

Cited by 11 publications

References 13 publications

Short range ordering and magnetostriction in Fe–Ga and other Fe alloy single crystals

Short range ordering and magnetostriction in Fe–Ga and other Fe alloy single crystals

Ordering, magnetostriction, and elastic properties in Fe-27.5at.% Ga alloy single crystals

Quantum resonances in reflection of relativistic electrons and positrons

Contact Info

Product

Resources

About