Question

Two answers required. Nicola Spaldin’s group pioneered the study of materials that exhibit these two properties, such as bismuth ferrite. For 10 points each:
[10h] Give these two properties, which rarely occur together because one is favored by empty d-shells and the other is favored by partially filled d-shells. Materials with these two properties are of interest mainly for developing ultra-low-power logic devices.
ANSWER: ferroelectric AND ferromagnetic [reject partial answers; prompt on multiferroic]
[10e] Intel’s recent MESO architecture reads out a multiferroic layer using the inverse Rashba-Edelstein effect, in which accumulation of this quantity generates current. Electrons have a magnetic moment due to this quantity, their intrinsic angular momentum.
ANSWER: spin [or spin angular momentum]
[10m] While ferromagnetic materials display nonzero magnetization, ferroelectric materials display nonzero values of this quantity in the absence of external fields. The divergence of this quantity is the bound charge.
ANSWER: polarization density [or electric polarization]
<VD, Physics>

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2023 ARCADIA at UC BerkeleyPremiereY210.00100%0%0%
2023 ARCADIA at Carleton UniversityPremiereY310.0067%33%0%
2023 ARCADIA at Claremont CollegesPremiereY110.00100%0%0%
2023 ARCADIA at IndianaPremiereY510.00100%0%0%
2023 ARCADIA at RITPremiereY215.00100%50%0%
2023 ARCADIA at WUSTLPremiereY310.00100%0%0%

Data

McDouble West-CarletonOttawa C0101020
Ottawa BOttawa A010010
WaterlooToronto Ray of Sun in the Sky0000