Hai L Feng, Martha Greenblatt, Nathan P Bentley, Tom Lancaster, Adrian D Hillier, Budhika Mendis, Rebecca Rae, Fabio Orlandi, Emma Suard, Thomas J Hicken, Emma E McCabe
{"title":"Structural distortions and consequences for magnetism in the 5d<sup>1</sup> double perovskite Pb<sub>2</sub>MgReO<sub>6</sub>.","authors":"Hai L Feng, Martha Greenblatt, Nathan P Bentley, Tom Lancaster, Adrian D Hillier, Budhika Mendis, Rebecca Rae, Fabio Orlandi, Emma Suard, Thomas J Hicken, Emma E McCabe","doi":"10.1039/d6tc01983h","DOIUrl":null,"url":null,"abstract":"<p><p>We report here the structural and magnetic characterisation of the high-pressure double perovskite Pb<sub>2</sub>MgReO<sub>6</sub>. Our analysis using neutron diffraction demonstrates that the second-order Jahn-Teller Pb<sup>2+</sup> cation plays the dominant structural role, preventing the proposed delicate quadrupolar order from emerging. We explore the relationship between related polar and antipolar structural phases in the context of other complex double perovskites. Muon-spin relaxation (µSR) measurements suggest that a short-range ordered state occurs for 11.3 K < <i>T</i> < 30 K, before a collinear AFM state sets in for <i>T</i> < 11.3 K. These findings add to our understanding of the structural behaviour of lead-based perovskites, as well as the sensitivity of multipolar order to site symmetry.</p>","PeriodicalId":84,"journal":{"name":"Journal of Materials Chemistry C","volume":"14 35","pages":"16403-16417"},"PeriodicalIF":5.1000,"publicationDate":"2026-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC13584819/pdf/","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of Materials Chemistry C","FirstCategoryId":"1","ListUrlMain":"https://doi.org/10.1039/d6tc01983h","RegionNum":2,"RegionCategory":"材料科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"2026/9/17 0:00:00","PubModel":"eCollection","JCR":"Q2","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
We report here the structural and magnetic characterisation of the high-pressure double perovskite Pb2MgReO6. Our analysis using neutron diffraction demonstrates that the second-order Jahn-Teller Pb2+ cation plays the dominant structural role, preventing the proposed delicate quadrupolar order from emerging. We explore the relationship between related polar and antipolar structural phases in the context of other complex double perovskites. Muon-spin relaxation (µSR) measurements suggest that a short-range ordered state occurs for 11.3 K < T < 30 K, before a collinear AFM state sets in for T < 11.3 K. These findings add to our understanding of the structural behaviour of lead-based perovskites, as well as the sensitivity of multipolar order to site symmetry.
期刊介绍:
The Journal of Materials Chemistry is divided into three distinct sections, A, B, and C, each catering to specific applications of the materials under study:
Journal of Materials Chemistry A focuses primarily on materials intended for applications in energy and sustainability.
Journal of Materials Chemistry B specializes in materials designed for applications in biology and medicine.
Journal of Materials Chemistry C is dedicated to materials suitable for applications in optical, magnetic, and electronic devices.
Example topic areas within the scope of Journal of Materials Chemistry C are listed below. This list is neither exhaustive nor exclusive.
Bioelectronics
Conductors
Detectors
Dielectrics
Displays
Ferroelectrics
Lasers
LEDs
Lighting
Liquid crystals
Memory
Metamaterials
Multiferroics
Photonics
Photovoltaics
Semiconductors
Sensors
Single molecule conductors
Spintronics
Superconductors
Thermoelectrics
Topological insulators
Transistors