Article detail · 1994
High-temperature moment-volume instability and anti-Invar of γ-Fe
Journal
Physical review. B, Condensed matter- Year
- 1994
- Type
- article
Data source split
- YÖKSİS venue Physical review. B, Condensed matter
- OpenAlex OpenAlex enrichment (abstract, citations, topics)
Abstract
OpenAlex · English
Just as Invar describes a system with a smaller than ``normal'' thermal expansion in a magnetically ordered state, a system with a larger than ``normal'' thermal expansion in a magnetically disordered state can be described as anti-Invar. Anti-Invar had been already observed in a number of fcc binary and ternary alloys of the 3d series well above magnetic ordering temperatures. While Invar is characterized by low-temperature moment-volume instabilities, anti-Invar signifies the importance of high-temperature moment-volume instabilities. Both are closely related to the ground-state properties. We have reinvestigated the ${\mathrm{Fe}}_{50}$${\mathrm{Ni}}_{\mathit{x}}$${\mathrm{Mn}}_{50\mathrm{\ensuremath{-}}\mathit{x}}$ alloy system and confirmed the existence of enhanced thermal expansion at high temperatures, i.e., the anti-Invar effect. With the aid of the thermal properties of these alloys we deduce the temperature dependence of the thermal expansion of \ensuremath{\gamma}-Fe and show its anti-Invar nature. The enhanced volume expansion in \ensuremath{\gamma}-Fe amounts to 2.8%, which is larger than the Invar effect (2%) in ${\mathrm{Fe}}_{65}$${\mathrm{Ni}}_{35}$.
Topics
Citations
OpenAlex cited_by_count. Not a WoS or Scopus citation count; those sources have no separate column here.
234 citations
OpenAlex cited_by_count (cache / database)
16 publications in the local catalog that cite this work (OpenAlex reference match; not the full global list).
- Antiferromagnetic Invar and anti-Invar in Fe-Mn alloys 1995
- The anomalous temperature dependence of the paramagnetic response of Fe-rich fcc Fe-Ni 1997
- Basic Understanding of the Relations between Invar, Anti-Invar and Martensite in Fe-based Alloys 1999
- Relevance of magnetic instabilities to the properties of interstitial solid solutions and compounds of Fe 2001
- Inducing strong magnetism in Cr20Mn20Fe20Co20Ni20 high-entropy alloys by exploiting its anti-Invar property 2019
- Short-range magnetic collapse of Fe under high pressure at high temperatures observed using x-ray emission spectroscopy 2008
- The structure of iron 2001
- 3d transition-metal high-entropy Invar alloy developed by adjusting the valence-electron concentration 2021
- Magnetic properties of fcc and σ phases in equiatomic and off-equiatomic high-entropy Cantor alloys 2022
- Relevance of magnetic instabilities to the phase stabilities of Fe alloys 2000