High-pressure synthesis, crystal structures, and properties of CdMn7O12 and SrMn7O12 perovskites

Inorganic Chemistry
Yana S GlazkovaAlexei A Belik

Abstract

We synthesize CdMn7O12 and SrMn7-xFexO12 (x = 0, 0.08, and 0.5) perovskites under high pressure (6 GPa) and high temperature (1373-1573 K) conditions and investigate their structural, magnetic, dielectric, and ferroelectric properties. CdMn7O12 and SrMn7O12 are isostructural with CaMn7O12: space group R3̅ (No. 148), Z = 3, and lattice parameters a = 10.45508(2) Å and c = 6.33131(1) Å for CdMn7O12 and a = 10.49807(1) Å and c = 6.37985(1) Å for SrMn7O12 at 295 K. There is a structural phase transition at 493 K in CdMn7O12 and at 404 K in SrMn7O12 to a cubic structure (space group Im3̅), associated with charge ordering as found by the structural analysis and Mössbauer spectroscopy. SrMn6.5Fe0.5O12 crystallizes in space group Im3̅ at 295 K with a = 7.40766(2) Å and exhibits spin-glass magnetic properties below 34 K. There are two magnetic transitions in CdMn7O12 with the Néel temperatures TN2 = 33 K and TN1 = 88 K, and in SrMn7O12 with TN2 = 63 K and TN1 = 87 K. A field-induced transition is found in CdMn7O12 from about 65 kOe, and TN2 = 58 K at 90 kOe. No dielectric anomalies are found at TN1 and TN2 at 0 Oe in both compound, but CdMn7O12 exhibits small anomalies at TN1 and TN2 at 90 kOe. In pyroelectric current measurements, we o...Continue Reading

References

Sep 30, 2008·Inorganic Chemistry·Yuichi Shimakawa
Oct 22, 2008·Journal of the American Chemical Society·Naoki ImamuraHisao Yamauchi
Mar 10, 2012·Physical Review Letters·R D JohnsonC Martin
Sep 26, 2012·Physical Review Letters·Noriki TeradaHideaki Kitazawa
Jan 3, 2013·Angewandte Chemie·Sergey V OvsyannikovLeonid Dubrovinsky
Jan 22, 2013·Inorganic Chemistry·Kentaro ShiroTetsuo Irifune
May 28, 2013·Journal of Physics. Condensed Matter : an Institute of Physics Journal·J SannigrahiS Majumdar
Oct 3, 2013·Inorganic Chemistry·Sergey V OvsyannikovAlexander E Karkin
Oct 5, 2013·Journal of the American Chemical Society·Youguo ShiKazunari Yamaura
Oct 30, 2014·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Yuichi Shimakawa, Masaichiro Mizumaki

❮ Previous
Next ❯

Citations

May 28, 2016·Inorganic Chemistry·Alexei A BelikYasutaka Imanaka
Jan 9, 2018·Journal of Physics. Condensed Matter : an Institute of Physics Journal·Lei ZhangAlexei A Belik
Feb 1, 2018·Dalton Transactions : an International Journal of Inorganic Chemistry·Alexei A Belik

❮ Previous
Next ❯

Related Concepts

Trending Feeds

COVID-19

Coronaviruses encompass a large family of viruses that cause the common cold as well as more serious diseases, such as the ongoing outbreak of coronavirus disease 2019 (COVID-19; formally known as 2019-nCoV). Coronaviruses can spread from animals to humans; symptoms include fever, cough, shortness of breath, and breathing difficulties; in more severe cases, infection can lead to death. This feed covers recent research on COVID-19.

Blastomycosis

Blastomycosis fungal infections spread through inhaling Blastomyces dermatitidis spores. Discover the latest research on blastomycosis fungal infections here.

Nuclear Pore Complex in ALS/FTD

Alterations in nucleocytoplasmic transport, controlled by the nuclear pore complex, may be involved in the pathomechanism underlying multiple neurodegenerative diseases including Amyotrophic Lateral Sclerosis and Frontotemporal Dementia. Here is the latest research on the nuclear pore complex in ALS and FTD.

Applications of Molecular Barcoding

The concept of molecular barcoding is that each original DNA or RNA molecule is attached to a unique sequence barcode. Sequence reads having different barcodes represent different original molecules, while sequence reads having the same barcode are results of PCR duplication from one original molecule. Discover the latest research on molecular barcoding here.

Chronic Fatigue Syndrome

Chronic fatigue syndrome is a disease characterized by unexplained disabling fatigue; the pathology of which is incompletely understood. Discover the latest research on chronic fatigue syndrome here.

Evolution of Pluripotency

Pluripotency refers to the ability of a cell to develop into three primary germ cell layers of the embryo. This feed focuses on the mechanisms that underlie the evolution of pluripotency. Here is the latest research.

Position Effect Variegation

Position Effect Variagation occurs when a gene is inactivated due to its positioning near heterochromatic regions within a chromosome. Discover the latest research on Position Effect Variagation here.

STING Receptor Agonists

Stimulator of IFN genes (STING) are a group of transmembrane proteins that are involved in the induction of type I interferon that is important in the innate immune response. The stimulation of STING has been an active area of research in the treatment of cancer and infectious diseases. Here is the latest research on STING receptor agonists.

Microbicide

Microbicides are products that can be applied to vaginal or rectal mucosal surfaces with the goal of preventing, or at least significantly reducing, the transmission of sexually transmitted infections. Here is the latest research on microbicides.