Results 291 to 300 of about 13,591,151 (395)

Tunable Magnetism and Intrinsic Exchange Bias in Al‐Substituted Terbium Iron Garnet

open access: yesAdvanced Materials, EarlyView.
Al substitution in terbium iron garnet thin films enables continuous tuning of the magnetic compensation temperature from 190 K to above room temperature. Near compensation, a giant intrinsic exchange bias emerges, whose sign and stochasticity can be controlled by external fields and cooling history. This approach provides new routes to engineer garnet
Takayuki Shiino   +3 more
wiley   +1 more source

Beyond Presumptions: Toward Mechanistic Clarity in Metal‐Free Carbon Catalysts for Electrochemical H2O2 Production via Data Science

open access: yesAdvanced Materials, EarlyView.
Metal‐free carbon catalysts enable the sustainable synthesis of hydrogen peroxide via two‐electron oxygen reduction; however, active site complexity continues to hinder reliable interpretation. This review critiques correlation‐based approaches and highlights the importance of orthogonal experimental designs, standardized catalyst passports ...
Dayu Zhu   +3 more
wiley   +1 more source

Self‐Cooling Molecular Spin Qudits

open access: yesAdvanced Materials, EarlyView.
A material made of [GdEr] molecular dimers can encode a qudit and perform as a magnetic refrigerant. Microwave resonant pulses coherently manipulate its 16 spin states, while direct demagnetization measurements cool the material and a device down to temperatures below 1 K.
Elías Palacios   +12 more
wiley   +1 more source

Lanthanum‐Induced Gradient Fields in Asymmetric Heterointerface Catalysts for Enhanced Oxygen Electrocatalysis

open access: yesAdvanced Materials, EarlyView.
Uncontrolled atomic migration during the pyrolysis of metal‐N‐C catalysts often leads to disordered coordination environments, active site loss, and poor oxygen electrocatalytic activities. Herein, a La‐mediated atomic migration strategy enables the fabrication of a well‐defined asymmetric heterostructure (LaN/LaFe‐NC) featuring a built‐in electric ...
Yihan Zhang   +6 more
wiley   +1 more source

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