Data · dataset · 2026
Thermal behaviour of nanostructured magnetic materials
Listed in ZivaHub and Deakin Research Online and DMU Figshare — shown once because both records carry DOI 10.17034/32638263.v1
With the ever-increasing need to fit memory storage into a smaller space, technological solutions are utilising heat to allow data to be written into hard drives with extremely high coercivity.
Description
The purpose of this thesis is to explore and understand the thermal behaviour of magnetic materials that have been strategically nano-structured. The exploration diverges into three parts: firstly, the effect of magnetic domain direction, parallel and perpendicular to the direction of heat flow, has on the thermal transport, see chapter 3.
This devolved into using magnetic and thermal simulations to estimate the required minimum thermal conductivity ratio of parallel to perpendicular domains, for the Scanning Thermal Microscope probe to resolve. Secondly, the relationship between thermal and exchange energy of Manganese perovskites were explored by isothermal magnetisation vs applied field measurements, carried out using a superconducting quantum interference device, see chapter 4.
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The perovskites were doped with various amounts of Calcium, and synthesised in various environments to observe this would alter the magnetocaloric effect of the perovskites. Lastly, the phenomenon of spin cross-over (SCO) in similar Manganese complexes were contrasted and compared. Magnetisation vs temperature measurements, coupled with X-ray diffraction characterisation of the molecules before and after the transition temperature, allowed insight into the cooperativity mechanism.
The cooperativity of a crystal lattice is what allows for sharp SCO transitions exhibiting hysteresis. Molecules with this form of SCO transition are suitable candidates for memory storage.
Links
Where it is published
- DOI doi.org/10.17034/32638263.v1 ↗
DOI / persistent id · from zivahub uct ac za
Catalogue records · 1
- OAI-PMH record api.figshare.com/v2/oai?verb=GetRecord&metadataPrefix=oai_dc&identifier=oai%3Af… ↗
metadata API · from zivahub uct ac za
Topics
- From keywords
- Earth & Environmental Science · Earth & Environmental Science · Earth & Environmental Science · Engineering · Engineering · Engineering · Psychology & Behavioral Science · Psychology & Behavioral Science · Psychology & Behavioral Science
- Inferred from text
- Nanotechnology 70%
Provenance · 3 source records, 14 field assertions
| Source | Key | Last seen | Raw |
|---|---|---|---|
| ZivaHub | oai:figshare.com:article/32638263 | 10 d ago | JSON v1 |
| Deakin Research Online | oai:figshare.com:article/32638263 | 10 d ago | JSON v1 |
| DMU Figshare | oai:figshare.com:article/32638263 | 10 d ago | JSON v1 |
| Field | Assertion | Extractor | Evidence |
|---|---|---|---|
| concepts[field].anzsrc:group:4018 | enrichment · zivahub uct ac za | taxonomy-embedding@1.1.0 | title+keywords+description (70%) |
| concepts[field].local:field:earth-environmental | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| concepts[field].local:field:earth-environmental | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:engineering | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
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| concepts[field].local:field:engineering | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:psychology-behavioral | mapping · figshare dmu ac uk | connector:figshare_dmu_ac_uk@1.0.0 | |
| concepts[field].local:field:psychology-behavioral | mapping · dro deakin edu au | connector:dro_deakin_edu_au@1.0.0 | |
| concepts[field].local:field:psychology-behavioral | mapping · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| description | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/description |
| license_text | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| publication_date | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | |
| title | source · zivahub uct ac za | connector:zivahub_uct_ac_za@1.0.0 | /metadata/dc/title |