{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,3,18]],"date-time":"2026-03-18T01:11:50Z","timestamp":1773796310993,"version":"3.50.1"},"reference-count":31,"publisher":"AIP Publishing","issue":"11","funder":[{"name":"Portuguese Foundation for Science and Technology","award":["SFRH\/BPD\/42506\/2007"],"award-info":[{"award-number":["SFRH\/BPD\/42506\/2007"]}]}],"content-domain":{"domain":["pubs.aip.org"],"crossmark-restriction":true},"short-container-title":[],"published-print":{"date-parts":[[2011,6,1]]},"abstract":"<jats:p>An investigation of the crystal structure, the magnetic and the piezoelectric properties of polycrystalline Bi1-xCaxFe1-x\/2Nbx\/2O3 (I) and Bi1-xPbxFe1-x\/2Nbx\/2O3 (II) systems was performed by x-ray diffraction, M\u00f6ssbauer spectroscopy, vibrating sample magnetometry, and piezoresponse force microscopy. It is shown that an increasing niobium content induces a polar-to-nonpolar morphotropic boundary near x\u2009=\u20090.19 (I) and x\u2009=\u20090.3 (II). Within the polar region of the system (I), (0.15\u2009\u2264x\u2009\u22640.18), the solid solutions are homogeneous weak ferromagnets whereas compounds of the system (II) do not exhibit an appreciable spontaneous magnetization. It is assumed that chemical substitutions leading to a decrease of the initial volume of the unit cell favor the stabilization of the weak ferromagnetic state within the rhombohedral ferroelectric phase. The piezoresponse is significantly enhanced near the morphotropic boundary. The piezoelectric properties of the parent antiferromagnet BiFeO3, harboring a cycloidal spatially modulated spin structure, are compared with those of the polar weak ferromagnet Bi0.82Ca0.18Fe0.91Nb0.09O3.<\/jats:p>","DOI":"10.1063\/1.3594251","type":"journal-article","created":{"date-parts":[[2011,6,3]],"date-time":"2011-06-03T18:50:58Z","timestamp":1307127058000},"update-policy":"https:\/\/doi.org\/10.1063\/aip-crossmark-policy-page","source":"Crossref","is-referenced-by-count":12,"title":["Enhanced piezoelectric and magnetic properties of Bi1\u2212<i>x<\/i>Ca<i>x<\/i>Fe1\u2212<i>x<\/i>\/2Nb<i>x<\/i>\/2O3 solid solutions"],"prefix":"10.1063","volume":"109","author":[{"given":"I. O.","family":"Troyanchuk","sequence":"first","affiliation":[{"name":"1SSPA, Scientific-Practical Materials Research Centre of NAS of Belarus, P. Brovka str.19, Minsk 220072, Belarus"}]},{"given":"N. V.","family":"Tereshko","sequence":"additional","affiliation":[{"name":"1SSPA, Scientific-Practical Materials Research Centre of NAS of Belarus, P. Brovka str.19, Minsk 220072, Belarus"}]},{"given":"D. V.","family":"Karpinsky","sequence":"additional","affiliation":[{"name":"1SSPA, Scientific-Practical Materials Research Centre of NAS of Belarus, P. Brovka str.19, Minsk 220072, Belarus"},{"name":"University of Aveiro 2 Department of Ceramics and Glass Engineering and CICECO, , 3810-193 Aveiro, Portugal"}]},{"given":"A. L.","family":"Kholkin","sequence":"additional","affiliation":[{"name":"University of Aveiro 2 Department of Ceramics and Glass Engineering and CICECO, , 3810-193 Aveiro, Portugal"}]},{"given":"M.","family":"Kopcewicz","sequence":"additional","affiliation":[{"name":"Institute of Electronic Materials Technology 3 , PL-01-919, Warsaw, Poland"}]},{"given":"K.","family":"B\u00e4rner","sequence":"additional","affiliation":[{"name":"University of Gottingen 4 Physics Department (IV. Physics Institute), , F. Hund Platz 1, Gottingen 37077, Germany"}]}],"member":"317","published-online":{"date-parts":[[2011,6,2]]},"reference":[{"key":"2023072106364885800_c1","doi-asserted-by":"publisher","first-page":"R123","DOI":"10.1088\/0022-3727\/38\/8\/R01","volume":"38","year":"2005","journal-title":"J. Phys. D: Appl. Phys"},{"key":"2023072106364885800_c2","doi-asserted-by":"publisher","first-page":"2463","DOI":"10.1002\/adma.200802849","volume":"21","year":"2009","journal-title":"Adv. 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