Rich magnetic phase diagram of putative helimagnet Sr3Fe2O7

Research output: Contribution to journalResearch articleContributedpeer-review



The cubic perovskite SrFeO3 was recently reported to host hedgehog-and skyrmion-lattice phases in a highly symmetric crystal structure which does not support the Dzyaloshinskii-Moriya interactions commonly invoked to explain such magnetic order. Hints of a complex magnetic phase diagram have also recently been found in powder samples of the single-layer Ruddlesden-Popper analog Sr2FeO4, so a reinvestigation of the bilayer material Sr3Fe2O7, believed to be a simple helimagnet, is called for. Our magnetization and dilatometry studies reveal a rich magnetic phase diagram with at least six distinct magnetically ordered phases and strong similarities to that of SrFeO3. In particular, at least one phase is apparently multiple-q, and the qs are not observed to vary among the phases. Since Sr3Fe2O7 has only two possible orientations for its propagation vector, some of the phases are likely exotic multiple-q order, and it is possible to fully detwin all phases and more readily access their exotic physics.


Original languageEnglish
Article number174420
Number of pages13
JournalPhysical Review B
Issue number17
Publication statusPublished - 15 Nov 2023

External IDs

Scopus 85177983451


Research priority areas of TU Dresden

DFG Classification of Subject Areas according to Review Boards

Subject groups, research areas, subject areas according to Destatis

Library keywords