Category Archives: Classics

Classic papers. Appreciation. Annotation. Impact. History of Ideas.

Classics in Materials Science: Shockley and Read’s dislocation models of crystal grain boundaries

Posted on 10 June 2009 by Guru

Any crystalline material contains many defects. Depending on the topology of the defects, they can be classified as point, line, surface and volume defects. Of these, only point defects are equilibrium defects — that is, at any temperature above absolute … Continue reading →

Posted in Classics | Tagged Aust, Bragg, Burgers, Chalmers, dislocation models of grain boundaries, energies of grain boundaries, grain boundaries, Read-Shockley, small angle grain boundaries, The Giant's Shoulders, Transition lattice | 2 Comments

Classics in Materials Science: Potts model and its relevance to simulation of microstructures

Posted on 9 May 2009 by Guru

A soap bubble is an extraordinarily beautiful thing and yet it requires virtually no skill to produce. This is because surface tension does all the work for you, making sure that a perfect spherical membrane is produced every time. In … Continue reading →

Posted in Classics | Tagged grain growth, Ising model, microstructural evolution, microstructure, Potts model, recrystallisation, The Giant's Shoulders, Zener pinning | 2 Comments

Classics in Materials Science: Harper’s experiments with Snoek pendulum

Posted on 8 April 2009 by Guru

Introduction Dislocations are one type of defect in a crystalline solid; they distort the crystalline lattice around them; these distortions around a dislocation in a crystal could be dilatational (the distance between planes is more than what it should be) … Continue reading →

Posted in Classics | 3 Comments

Classics in materials science: Vegard’s law of linear relationship between lattice parameter and alloy composition

Posted on 14 March 2009 by Guru

Let us consider a pure metal, say copper; let us consider the case in which we remove some copper atoms and substitute for them with gold atoms; since gold atoms are slightly bigger than copper atoms, it is natural to … Continue reading →

Posted in Classics | Tagged alloys, composition, L Vegard, lattice parameter, solid solution, stoichiometry, The Giant's Shoulders, Vegard's law | 1 Comment

Spintronics – I : The discovery of Giant MagnetoResistance (GMR) and the birth of spintronics

Posted on 24 February 2009 by Hari Srinivas

Let me start with this quote, “The theory of metallic resistance abounds in mysteries,” rightly said by Meaden (1971). One of these mysteries is about how and why electrical resistance changes when a magnetic field acts on ferromagnetic materials. And … Continue reading →

Posted in Classics, General | Tagged giant magnetoresistance, IBM, multi-layers, Nobel Prize, Spintronics

Classics in Materials Science 1964 vintage

Posted on 15 February 2009 by Rangu

A citation classic from 1964 I had the good fortune that my very first paper in my research career published in Acta Metallurgica in 1964 became a citation classic. The article by David Brandon, my Ph D Supervisor at Cambridge … Continue reading →

Posted in Classics, General, India | 1 Comment

Classics in Materials Science: The Bragg-Williams model of order-disorder transformations. II

Posted on 14 February 2009 by Guru

Since Bragg and Williams (BW) wrote a series [1-3], I guess it is only fitting that my post on their classic should also be a series. So, here is the second part. After the first post, Abi made an astute … Continue reading →

Posted in Classics | Tagged Bethe, Bragg-Williams, ferromagnetism, Gorky, intermetallics, Langevin, mean-field theory, order-disorder transformations, phase separation, quasi-chemical approach, random substitutional solid solution, The Giant's Shoulders, Weiss

Classics in Materials Science: The Bragg-Williams model of order-disorder transformations

Posted on 13 February 2009 by Guru

The atomic arrangement in a crystal can be understood in terms of unit cells; for example, let us consider the metal copper; the arrangement of atoms in the copper crystal can be described using the face centred cubic (fcc) unit … Continue reading →

Classics in Materials Science: Heycock and Neville’s determination of Cu-Sn (bronze) phase diagram

Posted on 11 January 2009 by Guru

Bronze is an important alloy. It is so important in the histories of our civilizations that one of the prehistoric ages is named after it: The Bronze Age is, with respect to a given prehistoric society, the period in that … Continue reading →

Posted in Classics | Tagged bronze, constitution diagrams, copper-tin, equilibrium diagrams, Heycock, Neville, phase diagrams, The Giant's Shoulders | 2 Comments

Category Archives: Classics

Archives

Meta

Follow “Materialia Indica”