{"doi":"10.1021/acsaelm.2c00523","title":"Effects of Crystalline Disorder on Interfacial and Magnetic Properties of Sputtered Topological Insulator/Ferromagnet Heterostructures","abstract":"Thin films of topological insulators (TIs) coupled with ferromagnets (FMs) are excellent candidates for energy-efficient spintronics devices. Here, the effect of the crystalline structural disorder of TI on the interfacial and magnetic properties of sputter-deposited TI/FM, Bi2Te3/Ni80Fe20, heterostructures is reported. Ni and a smaller amount of Fe from Py were found to diffuse across the interface and react with Bi2Te3. For improved crystalline c-axis-oriented Bi2Te3 films, a significant enhancement in Gilbert damping is observed, accompanied by an effective out-of-plane magnetic anisotropy and enhanced damping-like spin–orbit torque (DL-SOT), possibly due to the topological surface states (TSS) of Bi2Te3. Furthermore, a spontaneous exchange bias is observed in hysteresis loop measurements at low temperatures. This is caused by a topological antiferromagnetic interfacial layer formed due to a solid-state reaction between the diffused Ni with Bi2Te3 that couples with the FM, Ni80Fe20. For the increasing disorder of Bi2Te3, a significant weakening of the exchange interaction in the AFM interfacial layer is observed. These experimental results open the pathway for further exploration of crystalline-disordered TIs and their interfaces.","journal":"ACS Applied Electronic Materials","year":2022,"id":295389,"datarank":0.10397207708399181,"base_score":0.6931471805599453,"endowment":0.6931471805599453,"self_citation_contribution":0.10397207708399181,"citation_network_contribution":0.0,"self_endowment_contribution":0.10397207708399181,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":1,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.9482,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2022-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":981336,"name":"K. Mahalingam","orcid":"0000-0003-0917-3656","position":1,"is_corresponding":false},{"id":981337,"name":"A. S. Fedorko","orcid":"0000-0003-3536-1183","position":2,"is_corresponding":false},{"id":719075,"name":"Alexandria Will‐Cole","orcid":"0000-0003-2066-1263","position":3,"is_corresponding":false},{"id":981338,"name":"Jaehyeon Ryu","orcid":"0000-0003-3446-6565","position":4,"is_corresponding":false},{"id":981704,"name":"Michael Page","orcid":null,"position":5,"is_corresponding":false},{"id":981339,"name":"Michael E. McConney","orcid":"0000-0002-6249-6836","position":6,"is_corresponding":false},{"id":981340,"name":"Hui Fang","orcid":"0000-0001-9365-7420","position":7,"is_corresponding":false},{"id":981705,"name":"Don Heiman","orcid":null,"position":8,"is_corresponding":false},{"id":371457,"name":"Nian X. Sun","orcid":"0000-0002-3120-0094","position":9,"is_corresponding":false},{"id":981335,"name":"Nirjhar Bhattacharjee","orcid":"0000-0001-7305-4032","position":0,"is_corresponding":true}],"reference_count":44,"raw_metadata":{"citation_network_status":"fetched"},"created_at":"2026-07-19T00:31:08.861377Z","pmid":null,"pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}