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superlattice

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Book Chapter

Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006229
EISBN: 978-1-62708-163-4
... article describes the order-disorder transformation that typically occurs on cooling from a disordered solid solution to an ordered phase. It provides a table that lists selected superlattice structures and alloy phases that order according to each superlattice. The article informs that spinodal...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001260
EISBN: 978-1-62708-170-2
.... Multiple-layer thin films with spatially periodic compositional microstructures of the type shown in Fig. 1 are sometimes referred to in the literature as composition-modulated alloys (CMAs) or as superlattice alloys. A wide variety of binary and ternary alloy systems have been electroplated as multiple...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006637
EISBN: 978-1-62708-213-6
... strained layered superlattices. Superlattices are alternating layered structures of fundamental interest and importance for potential application in electronic and optical devices. Lattice matching of heteroepitaxy has been emphasized in the materials selection for superlattice layers. However, high...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006655
EISBN: 978-1-62708-213-6
... profile is correspondingly 1/ N 1 a and 1/ N 2 b in the a and b directions. If an overlayer with a superlattice exists, additional diffracted beams appear that correspond to the periodicity of the superlattice. A larger unit mesh yields diffracted beams that are nearer to each other (Eq 2...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003084
EISBN: 978-1-62708-199-3
... a designation consisting of a capital letter ( A for elements, B for AB-type phases, C for AB 2 -type phases, D for other binary phases, E for ternary phases, and L for superlattices), followed a number consecutively assigned (within each group) at the time the type was reported. To...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003251
EISBN: 978-1-62708-199-3
... “superlattice” lines in a diffraction pattern—diffraction at angles where no diffraction occurs for the random solid solution—is indicative of the solution becoming ordered ( Fig. 12 ). Studies of ordering are typically conducted using Debye-Scherrer cameras or diffractometers. Fig. 12 Debye-Scherrer...
Book Chapter

Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0006544
EISBN: 978-1-62708-183-2
... equal. When defining the unit-cell size of an alloy phase, the possibility of crystal ordering occurring over several unit cells should be considered. For example, in the copper-gold system, a superlattice forms that is made up of 10 cells of the disordered lattice, creating what is called long-period...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006681
EISBN: 978-1-62708-213-6
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001284
EISBN: 978-1-62708-170-2
... as optoelectronic devices, such as lasers, light-emitting diodes, and high-efficiency photovoltaic cells. The ability to grow thin, multilayered structures with very fine dimensional and compositional control has made possible quantum-well devices and strained-layer superlattices. The development of...
Book Chapter

Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006292
EISBN: 978-1-62708-163-4
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001294
EISBN: 978-1-62708-170-2
... complex materials (ReB 22 ) ( Ref 7 ), reactive deposition ( Ref 8 ) (i.e., oxidizing ambients and enhanced gas-phase reaction due to high kinetic energies of evaporated material) ( Ref 9 ), and the growth of high-quality II-VI semiconductor superlattices ( Ref 10 , 11 , 12 ). However, research in these...
Series: ASM Handbook
Volume: 3
Publisher: ASM International
Published: 27 April 2016
DOI: 10.31399/asm.hb.v03.a0006150
EISBN: 978-1-62708-163-4
... … αBiPd 33.7 mP 32 P 2 1 … γ (a) 45.9 hP 16 … … Bi 2 Pd 5 56.0 mC 28 C 2/ m … Bi 12 Pd 31 56.8 hR 44 R 3 … βBiPd 3 60.4 … … … αBiPd 3 60.4 oP 16 Pmma … (Pd) ? to 100 cF 4 Fm 3 m Cu (a) Superlattice of NiAs type Source: H. Okamoto...
Series: ASM Handbook
Volume: 10
Publisher: ASM International
Published: 15 December 2019
DOI: 10.31399/asm.hb.v10.a0006657
EISBN: 978-1-62708-213-6
... generate a bevel. Adapted from Ref 69 A fracture across a coating or layered structure does not necessarily provide any geometric magnification, but useful information can still be obtained by direct analysis. The superlattice structure of GaAs-AlAs thin films highlights the potential of this...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006286
EISBN: 978-1-62708-169-6
.... Courtesy of G.F. Vander Voort, George Vander Voort Consulting, Wadsworth, IL If α-stabilizing additions of aluminum exceed approximately 6%, the probability of a superlattice structure, which has been identified as an ordered Ti 3 Al structure (α 2 ), will be introduced. The ordering may be dilute...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001320
EISBN: 978-1-62708-170-2
..., including metastable compounds, that can perhaps be exploited in particular applications ( Ref 39 ). Polycrystalline superlattice coatings such as TiN/NbN, TiN/Ni, and TiN/Ni-Cr are reported to have significantly higher microhardnesses than those of homogeneous nitrides and are promising for metalcutting...
Book Chapter

By S.L. Rohde
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001288
EISBN: 978-1-62708-170-2
... continued development in the next decade. These materials are already beginning to see commercial use in optical and wear-resistant applications. Very recently, work involving polycrystalline metal-nitride superlattice materials has produced films with hardness values in excess of 5000 HV. It is...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003164
EISBN: 978-1-62708-199-3
... in Ni 3 Al alloys than in nickel-base superalloys in tests below the range of the ductility minimum; see Fig. 9 for room-temperature fatigue crack growth. The good fatigue resistance of Ni 3 Al and other ordered intermetallic alloys has been attributed to fine planar slip and superlattice...
Series: ASM Handbook
Volume: 4E
Publisher: ASM International
Published: 01 June 2016
DOI: 10.31399/asm.hb.v04e.a0006280
EISBN: 978-1-62708-169-6
... (approximately 450 °C, or 840 °F), the copper and zinc atoms take specific relative positions to form the ordered β′ structure ( Fig. 2 ). The ordered β′ phase is referred to as a superlattice with long-range order of the copper and zinc atoms in the bcc lattice ( Fig. 2 ). Fig. 2 Ordered superlattice β...
Series: ASM Handbook
Volume: 5
Publisher: ASM International
Published: 01 January 1994
DOI: 10.31399/asm.hb.v05.a0001286
EISBN: 978-1-62708-170-2
... formed if there is lattice parameter matching between the deposited material and the substrate, or if the deposited material is thin enough to allow lattice strains to accommodate the lattice mismatch without producing dislocation networks. This latter condition produces a “strained layer superlattice...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003837
EISBN: 978-1-62708-183-2