MnBi2: A Metastable High-Pressure Phase in the Mn–Bi System
Abstract
Interacting heavy main group elements that are laden with spin–orbit coupling with transition metals, such as manganese, is a potential route toward the synthesis of new permanent magnets. In theory, this approach can be used to design magnets with large magnetic energy products by maximizing both coercive field and remnant magnetization. Powerful precedent for this approach resides in the intermetallic compound, MnBi, which was for a short time in the 1950’s the most powerful magnetic material in the world. Creating new materials within this phase space is enabled by high-pressure synthesis, which is facilitated by recent advances in in situ techniques within diamond anvil cells. We observed the Mn–Bi system under high pressure in search of novel intermetallic compounds, and herein we report the discovery of MnBi2, a novel intermetallic in the Mn–Bi system. This compound forms above 8.3(1) GPa, crystallizing in the Al2Cu structure-type with a = 6.8315(1) Å and c = 5.6572(2) Å. This discovery hints at the possibility of further compounds within this underexplored phase space.
- Authors:
-
- Northwestern Univ., Evanston, IL (United States)
- Northwestern Univ., Evanston, IL (United States); Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
- Argonne National Lab. (ANL), Lemont, IL (United States)
- Publication Date:
- Research Org.:
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States); Argonne National Lab. (ANL), Argonne, IL (United States); Northwestern Univ., Evanston, IL (United States); George Washington Univ., Washington, DC (United States)
- Sponsoring Org.:
- US Air Force Office of Scientific Research (AFOSR); USDOE Office of Science (SC), Basic Energy Sciences (BES). Scientific User Facilities Division; Army Research Office (ARO); Air Force Research Laboratory (AFRL) - Air Force Office of Scientific Research (AFOSR); National Science Foundation (NSF); USDOE National Nuclear Security Administration (NNSA), Office of Defense Programs (DP)
- OSTI Identifier:
- 1530676
- Alternate Identifier(s):
- OSTI ID: 1548403; OSTI ID: 1596775; OSTI ID: 1599891
- Report Number(s):
- LLNL-JRNL-758840
Journal ID: ISSN 0897-4756; 946905
- Grant/Contract Number:
- AC52-07NA27344; SC0018092; AC02-06CH11357; FA9550-14-1-0358; FA9550-17-1-0247; W911NF-15-1-0017; NA0003858
- Resource Type:
- Accepted Manuscript
- Journal Name:
- Chemistry of Materials
- Additional Journal Information:
- Journal Volume: 31; Journal Issue: 9; Journal ID: ISSN 0897-4756
- Publisher:
- American Chemical Society (ACS)
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
Citation Formats
Walsh, James P. S., Clarke, Samantha M., Puggioni, Danilo, Tamerius, Alexandra D., Meng, Yue, Rondinelli, James M., Jacobsen, Steven D., and Freedman, Danna E. MnBi2: A Metastable High-Pressure Phase in the Mn–Bi System. United States: N. p., 2019.
Web. doi:10.1021/acs.chemmater.9b00385.
Walsh, James P. S., Clarke, Samantha M., Puggioni, Danilo, Tamerius, Alexandra D., Meng, Yue, Rondinelli, James M., Jacobsen, Steven D., & Freedman, Danna E. MnBi2: A Metastable High-Pressure Phase in the Mn–Bi System. United States. https://doi.org/10.1021/acs.chemmater.9b00385
Walsh, James P. S., Clarke, Samantha M., Puggioni, Danilo, Tamerius, Alexandra D., Meng, Yue, Rondinelli, James M., Jacobsen, Steven D., and Freedman, Danna E. Wed .
"MnBi2: A Metastable High-Pressure Phase in the Mn–Bi System". United States. https://doi.org/10.1021/acs.chemmater.9b00385. https://www.osti.gov/servlets/purl/1530676.
@article{osti_1530676,
title = {MnBi2: A Metastable High-Pressure Phase in the Mn–Bi System},
author = {Walsh, James P. S. and Clarke, Samantha M. and Puggioni, Danilo and Tamerius, Alexandra D. and Meng, Yue and Rondinelli, James M. and Jacobsen, Steven D. and Freedman, Danna E.},
abstractNote = {Interacting heavy main group elements that are laden with spin–orbit coupling with transition metals, such as manganese, is a potential route toward the synthesis of new permanent magnets. In theory, this approach can be used to design magnets with large magnetic energy products by maximizing both coercive field and remnant magnetization. Powerful precedent for this approach resides in the intermetallic compound, MnBi, which was for a short time in the 1950’s the most powerful magnetic material in the world. Creating new materials within this phase space is enabled by high-pressure synthesis, which is facilitated by recent advances in in situ techniques within diamond anvil cells. We observed the Mn–Bi system under high pressure in search of novel intermetallic compounds, and herein we report the discovery of MnBi2, a novel intermetallic in the Mn–Bi system. This compound forms above 8.3(1) GPa, crystallizing in the Al2Cu structure-type with a = 6.8315(1) Å and c = 5.6572(2) Å. This discovery hints at the possibility of further compounds within this underexplored phase space.},
doi = {10.1021/acs.chemmater.9b00385},
journal = {Chemistry of Materials},
number = 9,
volume = 31,
place = {United States},
year = {Wed Apr 24 00:00:00 EDT 2019},
month = {Wed Apr 24 00:00:00 EDT 2019}
}
Web of Science