## Treatise on Materials Science and Technology, Volume 2 |

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Page 184

1 . SINGLE LIGHT IMPURITY The impurity mass Mo is assumed to be

considerably smaller than the host atom mass My and the force constants remain

unchanged . A localized

?

1 . SINGLE LIGHT IMPURITY The impurity mass Mo is assumed to be

considerably smaller than the host atom mass My and the force constants remain

unchanged . A localized

**mode**with frequency w is given by EW , 29 ( W ) dw JOL?

Page 192

In our very schematic model the soft

A and B are different . If A is equivalent to B , then the low temperature phase has

a unit cell twice as large as the high temperature phase and therefore — as ...

In our very schematic model the soft

**mode**has its critical point at q = 0 as long asA and B are different . If A is equivalent to B , then the low temperature phase has

a unit cell twice as large as the high temperature phase and therefore — as ...

Page 361

The very lowest wave number

and ErAG where the rare earth ion substitutes for Y , this

It further shifts to 85 cm - for ErGaG and YbGaG . This lowest

The very lowest wave number

**mode**is at y = 123 cm - in YAG . In DyAG , HOAG ,and ErAG where the rare earth ion substitutes for Y , this

**mode**shifts to 95 cm - 1 .It further shifts to 85 cm - for ErGaG and YbGaG . This lowest

**mode**in YAG is ...### What people are saying - Write a review

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angle anisotropy approximation assumed atoms average axis c-sites calculated cations coherent compounds concentration condition considerations constant contribution corresponding crystal curve defect density dependence determined diffusion direction discussed dislocations displacement effect elastic elastic scattering electron energy equation et al exist experimental experiments factor field flux lines follows force function garnet given gives important increasing Inelastic Scattering interaction interface ions lattice length limit magnetic materials measured Merwe metal method misfit mode neutron normal obtained parameter phase phonon Phys plane position potential present properties range rare earth reference region relation resolution resonance respectively sample scattering cross section shown shows single solid solution space strain stress structure substrate superconducting surface Table temperature tetrahedral theory thermal thickness transition unit values vector X-ray