title: Pressure control of magnetic clusters in strongly inhomogeneous ferromagnetic chalcopyrites.
abstract: Room-temperature ferromagnetism in Mn-doped chalcopyrites is a desire aspect when applying those materials to spin electronics. However, dominance of high Curie-temperatures due to cluster formation or inhomogeneities limited their consideration. Here we report how an external perturbation such as applied hydrostatic pressure in CdGeP₂:Mn induces a two serial magnetic transitions from ferromagnet to non-magnet state at room temperature. This effect is related to the unconventional properties of created MnP magnetic clusters within the host material. Such behavior is also discussed in connection with ab initio density functional calculations, where the structural properties of MnP indicate magnetic transitions as function of pressure as observed experimentally. Our results point out new ways to obtain controlled response of embedded magnetic clusters.
authors.affiliation: Amirkhanov Institute of Physics, Daghestan Scientific Center RAS 367003 Makhachkala, Russia.
authors.forename: Temirlan R
authors.initials: TR
authors.lastname: Arslanov
authors.affiliation: Amirkhanov Institute of Physics, Daghestan Scientific Center RAS 367003 Makhachkala, Russia.
authors.forename: Akhmedbek Yu
authors.initials: AY
authors.lastname: Mollaev
authors.affiliation: Amirkhanov Institute of Physics, Daghestan Scientific Center RAS 367003 Makhachkala, Russia.
authors.forename: Ibragimkhan K
authors.initials: IK
authors.lastname: Kamilov
authors.affiliation: Amirkhanov Institute of Physics, Daghestan Scientific Center RAS 367003 Makhachkala, Russia.
authors.forename: Rasul K
authors.initials: RK
authors.lastname: Arslanov
authors.affiliation: Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Lukasz
authors.initials: L
authors.lastname: Kilanski
authors.affiliation: Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Roman
authors.initials: R
authors.lastname: Minikaev
authors.affiliation: Institute of Physics, Polish Academy of Sciences, Al. Lotnikow 32/46, 02-668 Warsaw, Poland.
authors.forename: Anna
authors.initials: A
authors.lastname: Reszka
authors.affiliation: Centro de Investigación en Corrosión, Universidad Autónoma de Campeche, Av. Herore de Nacozari 480, Campeche, Campeche 24029, México.
authors.forename: Sinhué
authors.initials: S
authors.lastname: López-Moreno
authors.affiliation: Physics Department, West Virginia University, Morgantown, 26506-6315 West Virginia, USA.
authors.forename: Aldo H
authors.initials: AH
authors.lastname: Romero
authors.affiliation: Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden.
authors.forename: Muhammad
authors.initials: M
authors.lastname: Ramzan
authors.affiliation: 1] Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden [2] Department of Materials and Engineering, Royal Institute of Technology, 10044 Stockholm, Sweden.
authors.forename: Puspamitra
authors.initials: P
authors.lastname: Panigrahi
authors.affiliation: 1] Department of Physics and Astronomy, Uppsala University, 75120 Uppsala, Sweden [2] Department of Materials and Engineering, Royal Institute of Technology, 10044 Stockholm, Sweden.
authors.forename: Rajeev
authors.initials: R
authors.lastname: Ahuja
authors.affiliation: Scientific-Practical Materials Research Centre (SSPA) of NAS of Belarus, 220072 Minsk, Belarus.
authors.forename: Vladimir M
authors.initials: VM
authors.lastname: Trukhan
authors.affiliation: Institute Laue-Langevin, Boîte Postale 156, 38042 Grenoble Cedex 9, France.
authors.forename: Tapan
authors.initials: T
authors.lastname: Chatterji
authors.affiliation: Kurnakov Institute of General and Inorganic Chemistry RAS, 119991 Moscow, Russia.
authors.forename: Sergey F
authors.initials: SF
authors.lastname: Marenkin
authors.affiliation: Scientific-Practical Materials Research Centre (SSPA) of NAS of Belarus, 220072 Minsk, Belarus.
authors.forename: Tatyana V
authors.initials: TV
authors.lastname: Shoukavaya