title: Evolution of magnetism by rolling up hexagonal boron nitride nanosheets tailored with superparamagnetic nanoparticles.
abstract: Controlling tunable properties by rolling up two dimensional nanomaterials is an exciting avenue for tailoring the electronic and magnetic properties of materials at the nanoscale. We demonstrate the tailoring of a magnetic nanocomposite through hybridization with magnetic nanomaterials using hexagonal boron nitride (h-BN) templates as an effective way to evolve magnetism for the first time. Boron nitride nanosheets exhibited their typical diamagnetism, but rolled-up boron nitride sheets (called nanoscrolls) clearly have para-magnetism in the case of magnetic susceptibility. Additionally, the Fe3O4NP sample shows a maximum ZFC curve at about 103 K, which indicates well dispersed superparamagnetic nanoparticles. The ZFC curve for the h-BN-Fe3O4NP scrolls exhibited an apparent rounded maximum blocking temperature at 192 K compared to the Fe3O4NPs, leading to a dramatic increase in TB. These magnetic nanoscroll derivatives are remarkable materials and should be suitable for high-performance composites and nano-, medical- and electromechanical-devices.
authors.affiliation: Division of Chemical Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea. dhsuh@hanyang.ac.kr.
authors.forename: Da Young
authors.identifier: http://orcid.org/0000-0003-2667-6087
authors.initials: DY
authors.lastname: Hwang
authors.affiliation: Division of Chemical Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea. dhsuh@hanyang.ac.kr.
authors.forename: Kyoung Hwan
authors.initials: KH
authors.lastname: Choi
authors.affiliation: Division of Chemical Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea. dhsuh@hanyang.ac.kr.
authors.forename: Jeong Eon
authors.initials: JE
authors.lastname: Park
authors.affiliation: Division of Chemical Engineering, College of Engineering, Hanyang University, Seoul, 04763, Republic of Korea. dhsuh@hanyang.ac.kr.
authors.forename: Dong Hack
authors.identifier: http://orcid.org/0000-0003-0485-7557
authors.initials: DH
authors.lastname: Suh